taxonID	type	description	language	source
2B595F44FF88FFFA39D308DB4326B9FB.taxon	description	Trees (1.5 –) 2 – 7 (– 12) m tall, rhytidome strongly suberous and deeply grooved, trunk tortuous. Leaves with (4 –) 5 – 7 (– 8) pairs of pinnae; (3) 5 – 6 (17) pairs of leaflets; petiolar extrafloral nectary 1, verruciform with an elongated base, usually darkened; leaflets 1.5 – 3.5 (– 6) × 1 – 2.5 (– 6) cm, usually ovate to widely ovate, sometimes elliptic, distal leaflets usually obovate to obcordate, proximal leaflets commonly orbicular, chartaceous, usually concolor, rarely discolor, glabrous on both surfaces, unilateral tuft of trichomes on the lower surface present. Inflorescences of simple thyrsi, whitish to yellowish; cymulae of geminate to ternate spikes; spikes 10 – 11 (– 14) cm long. Flowers monoclinous, rarely diclinous, corolla glabrous, greenish yellow to yellowish-white, rarely white. Fruit a nucoid legume, straight, turgid, non-prominent seeds, valves subcoriaceous, inconspicuously nerved (Fig. 1 D). Vernacular names: — Barbatimão, Barba-de-timão, Casca-da-virgindade, Faveira, Barbatimão-Branco (Brazil).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF88FFFA39D308DB4326B9FB.taxon	distribution	Distribution and habitat: — S. adstringens is a widely distributed species endemic in Brazil, occurring in the states of Paraná (its southern distribution limit), São Paulo, Minas Gerais, Mato Grosso, Goiás, Federal District, Tocantins and Bahia. It is a very characteristic element of the Cerrado domain, mostly in cerrado sensu stricto and cerradão, also occurring in campos cerrados, campos sujos and campos rupestres, predominantly in dry and open habitats. Not rarely, S. adstringens can also be found in altered areas, such as vacant lands (mainly in allotments formerly occupied by cerrados) and roadsides. Only one specimen is referred to the state of Mato Grosso do Sul (Garcez s. n.), but it is an individual collected at the university campus and may have been cultivated, although this information is not mentioned on the exsiccate label.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF88FFFA39D308DB4326B9FB.taxon	discussion	Although Mimosa barbadetiman was fully described at Flora Fluminensis (Vellozo, 1881), the occurrence of this species is not recorded for the state of Rio de Janeiro. According to Lima (1995), the area in which the type specimen was collected (in campis apricis mediterraneis transalpinis) corresponds to “ rural formations of the Paraíba do Sul river, Serra da Mantiqueira and probably also it includes the cerrado ”. Thus, it also includes cerrado areas of the state of São Paulo, such as those occurring in the municipalities of São José dos Campos and Taubaté, where the taxon is known to occur from recent collections. In fact, Vellozo´s field excursions for the preparation of Flora Fluminensis were carried around the forests of Rio de Janeiro and surroundings (Bediaga & Lima, 2015, Pastore et al. 2021), so it is highly probable that the sample used in the description of Mimosa barbadetiman was actually collected in São Paulo state.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF88FFFA39D308DB4326B9FB.taxon	description	Conservation: — Least Concern (LC) [AOO = 780.000 km 2, EOO = 1,893,903.835 km 2]. Although extractivism is referred to this species as a possible cause of damage to population structures in some Brazilian regions (Borges Filho & Felfili 2003), according to the IUCN (2012, 2022) criteria this widely distributed species is not under threat. Phenology: — This species was collected with flowers and fruits throughout the year.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF88FFFA39D308DB4326B9FB.taxon	materials_examined	Selected specimens examined: — BRAZIL. Distrito Federal: Planaltina, Fazenda Cooperbrás, Núcleo Rural de Rio Preto, 22 September 2010, fl., B. M. T. Walter 5975 (CEN). Minas Gerais: Capitólio, Região de Furnas, estrada para Cachoeira Feixo da Serra, 24 May 2007, fr., J. N. Nakajima et al. 4524 (HUFU).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFFA39D308344697BD53.taxon	materials_examined	— Type: BRAZIL. Distrito Federal, Brasília, Barragem do Torto, 14 September 1985, Salles & Heringer 241 (holotype RB 288833!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFFA39D308344697BD53.taxon	description	Shrub 40 – 70 cm tall. Leaves with 5 – 9 pairs of pinnae; 5 – 11 pairs of leaflets; rachis nectaries 1 – 2, verruciform; blade usually chartaceous, margin sparsely puberule at least near the base and at the apex, leaflets 1.5 – 2.9 (– 3.5) × 1.2 – 2 (– 2.5) cm, discolor to rarely subconcolor, upper surface glabrous, lower surface sparsely puberule with a denser indumentum along the midrib, near the base and the apex, unilateral tuft of trichomes on the lower surface present. Inflorescences of simple thyrsi; cymulae of usually solitary spikes, rarely geminate, vinaceous. Flowers diclinous, vinaceous. Fruit a follicule, straight, flat-compressed, valves dark-brown (Fig. 2 B).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFFA39D308344697BD53.taxon	discussion	Remarks: — S. barbatulum and S. sallesianum were originally treated as distinct taxa based only in the type collection, but the analysis of new specimens revealed many intermediary characteristics mainly in respect to pinnae number and size, and with identical follicle fruits. Based on this, S. sallesianum is considered a synonym.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFFA39D308344697BD53.taxon	distribution	Distribution and habitat: — This species is only known from the type locality, region of Granja do Torto, Brasília (Federal District), where it occurs in cerrado areas. Conservation: — Critically Endangered (CR B 2 ab (ii, iii )) [AOO = 4.000 km 2, EOO not measurable]. Although the reduced size of the individuals makes it difficult to visually estimate the size of the populations, the species occurs in an area that has received considerable collecting efforts in the last decades. However, there are no recent collections of this taxon and recent visits to the region revealed a very small fragment of remaining native vegetation, though not occupied by residences, but taken by ruderal plants. The area is indisputably under extreme anthropogenic pressure, and thus Stryphnodendron barbatulum is here considered Critically Endangered.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFFA39D308344697BD53.taxon	description	Phenology: — Flowering samples of this species were collected in September and November, fruiting samples were collected in February.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFF839D30D9C441BB833.taxon	materials_examined	— Type: BRAZIL. Distrito Federal. Brasília, Parque Nacional de Brasília, 10 September 1963, Heringer 9178 (holotype RB 118803!, isotypes HB!, K!, M!, NY!, RFA!, UB!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFF839D30D9C441BB833.taxon	description	Subshrubs 50 – 80 cm tall, usually cespitose, bearing a well-developed, woody underground root-like system. Leaves with 8 – 11 pairs of pinnae; 10 – 15 (– 18) pairs of leaflets; rachis nectaries 2 – 4, verruciform; blade chartaceous, margin ciliate, leaflets (6 –) 10 – 15 × (2 –) 4 – 8 mm, discolor, glabrous on both surfaces, with sparse trichomes along the midrib, unilateral tuft of trichomes on the lower surface absent. Inflorescences of simple thyrsi; cymulae of solitary spikes, vinaceous. Flowers monoclinous, purplish to rarely pinkish. Fruit a follicule, straight, flat-compressed, 5.5 – 8 × 1.2 – 1.4 cm, valves dark-brown.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFF839D30D9C441BB833.taxon	distribution	Distribution and habitat: — S. confertum is endemic to Goiás state and Federal District (Brazil), in cerrado s. str. or campo cerrado, usually on rocky and / or sandy soil. The area where the holotype was collected in the Federal District, Granja do Torto, is currently a residential district of Brasília, with few areas still unoccupied. Other collections are referred to the Federal District, such as the Santa Maria dam, in a legally protected area (Brasilia National Park). No natural populations of this species were found on recent visits to the species´s known distribution range. The label of the specimen E. P. Heringer 14748 (UB) reads “ cultivated in Brasilia from seeds from the municipality of Cristalina, Goiás state ”. However, duplicates of this collection at HB and MO showed mixed samples of S. confertum and S. cristalinae), and certainly the label information corresponds to S. cristalinae, which is endemic to Cristalina (see comments of this species). Recent expeditions to Cristalina failed to find any population of S. confertum, reinforcing the distribution of S. confertum to the sites indicated above.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFF839D30D9C441BB833.taxon	conservation	Conservation: — Endangered (EN B 1 ab (i, ii, iii) + 2 ab (i, ii, iii) [AOO = 16.000 km 2, EOO = 1,134.284 km 2]. Although natural populations of S. confertum are found within a legally protected area, this species occurs in a restricted and threatened region.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFF839D30D9C441BB833.taxon	description	Phenology: — Flowering specimens were collected in June and from September to November, fruiting specimens were collected in May and June.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF86FFF839D30D9C441BB833.taxon	materials_examined	Selected specimens examined: — BRAZIL. Distrito Federal: Brasília, Granja do Torto, 20 September 1963, fl. E. P. Heringer 9178 (UB). Brasília, Parque Nacional de Brasília, acesso pela portaria da CAESB, 1 km a oeste em direção à represa, 01 June 2015, fr., M. F. Simon 2599 (CEN).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF84FFFE39D3087C460EBF37.taxon	materials_examined	— Type: BRAZIL. Pará, Oriximiná, Área de Mineração Rio Norte, 5 km da vila residencial, 1 ° 28 ’ S, 56 ° 23 ’ W, 11 November 1987, C. A. Cid Ferreira 9548 (holotype INPA 155605!, isotypes F!, K!, MO!, NY!, RB!, US!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF84FFFE39D3087C460EBF37.taxon	diagnosis	Diagnosis: Stryphnodendron conicum resembles S. guianense, but differs by its conical petiolar nectaries, with 3 distinct layers (vs. verruciform with an elongated base), rachis nectary conical to verruciform with an elongated base (vs. verruciform), rachilla nectary conical (vs. verruciform), tuft of hairs on the lower surface of the blades absent (vs. usually present, sometimes inconspicuous), calyx yellow-pubescent with apiculate lobes (vs. glabrous to rarely subglabrous with no evident lobes) and corolla pubescent at the lobes (vs. glabrous). Treelets to trees (3) 4 – 10 m tall, the branches lenticellate, lacking extrafloral nectaries, ferruginous-pulverulent, glabrescent. Leaves with petioles 3.7 – 5 cm long, ferruginous-pulverulent, very sparsely yellow-pubescent towards the apex, extrafloral nectary 1, inserted at (0.8 –) 1 – 1.6 cm of the base of the petiole, 3.5 – 4 × 1 – 1.5 mm, conical (with 3 distinct layers); pinnae (8 –) 9 – 11 (– 13) pairs, subopposite to opposite, the insertion of each pair spaced in 1 – 1.8 cm; rachis striate, ferruginous-pulverulent and sparsely yellow-pubescent; extrafloral nectaries 1 – 3 (– 4), inserted immediately below the distal pair of pinnae, ca. 1.5 × 1.5 mm, conical to verruciform with an elongated base; stipels deciduous, not seen; 2 nd degree petiolules ca. 1 mm long, the same color as the upper surface of the blade, yellowpuberule; leaflets (6 –) 9 – 14 pairs, the proximal 2 – 3 pairs of pinnae bearing fewer pairs of leaflets; rachillae yellowpubescent, very sparsely ferruginous-pulverulent, extrafloral nectaries 1 – 3, inserted at ca. 1 mm below the distal pair of leaflets, ca. 1 × 1 mm, conical, present only at the 2 – 3 proximal pairs of pinnae; stipel late deciduous, linear, ca. 0.5 mm long; insertion of leaflets usually alternate, very rarely subopposite, blade usually elliptic to elliptic-ovate, rarely oblong or circular, the ones of the distal pairs usually widely obovate, (5 –) 7 – 13 × (– 4) 5 – 8 mm, apex usually retuse, sometimes rounded, rarely truncate, at the distal pairs of pinnnulae usually emarginate, margin sub-revolute, entire, puberule, base asymmetrical, the proximal side usually truncate, sometimes widely rounded, at the distal pairs of leaflets usually acute, the distal side narrowly rounded, chartaceous, discolor, the upper surface dark, glossy, sparsely puberule, the lower surface lighter, opaque, puberule, unilateral tuft of trichomes on the lower surface of the leaflets absent, venation brochidodromous, the nerves evident and prominent on both surfaces. Inflorescences of simple thyrsi, yellow to greenish-yellow; cymulae of solitary geminate to ternate spikes, spike (8 –) 12 – 14 cm long; bracts deciduous, not seen; peduncle 1.1 – 3.5 cm long, ferruginous-pulverulent, subcylindrical; rachis sparsely ferruginous-pulverulent, densely yellow-pubescent, rarely yellow-pubescent, cylindrical, ca. 0.8 mm thick. Flowers monoclinous, color unknown; calyx tubular-campanulate to campanulate, apiculate, yellow-pubescent, ca. 1 mm long, color unknown, corolla ca. 2 mm long, campanulate, petals fused up to 2 / 3 of its length, subglabrous to sparsely pubescent at the tube, the central part of the lobes pubescent (the indumentum usually does not reach the edge), lobes acute, erect, color unknown; stamens 3.5 – 4 mm long, color unknown, anthers ca. 0.3 mm long, nectaries stipitate, conspicuous fold present at the dorsal side of the anthers, approximately the same length as the thecae; ovary shortly stipitate, stigma porate, sparsely puberule to glabrous; prophylls deciduous, ca. 0.5 mm long, shell-shaped, yellow-pubescent. Fruit a sessile, nucoid legume, mature fruits not seen, immature fruits straight, flat-compressed, seeds prominent, 6 – 7 × 1 cm, valves coriaceous, reddish-brown, densely ferruginous-pubescent. Seeds not seen.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF84FFFE39D3087C460EBF37.taxon	etymology	Etymology: — The name of this new species refers to the conical shape of the rachillae´s floral nectaries which is very distinct from other morphologically close species.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF84FFFE39D3087C460EBF37.taxon	discussion	Remarks: — Stryphnodendron conicum vegetatively resembles all the multifoliolate Amazonian species with medium-sized leaflets, yellowish inflorescences and indumentum in calyx and corolla (table 5). The specimens of this new species have often been named as S. guianense based on blade shape and the presence of unilateral tuft of trichomes on its lower surface, since the only identification key to Amazonian species of the genus to date (Martins, 1981) used vegetative characters. However, by the time this key was published the concept of S. guianensis showed many morphological and nomenclatural problems, and the circumscription of the species was usually broadened and often mistakenly included other species of Stryphnodendron. In fact, the analysis of a large number of specimens has showed that the tuft of trichomes are only rarely absent on the lower surface of the blades of S. guianense (vs. absent in S. conicum), and the new species shows other distinct characteristics such as extrafloral nectaries of the rachis conical to verruciform with an elongated base, calyx yellow-pubescent and indumentum ed corolla. Moreover, the leaf primordia at the apex of the branches show very developed petiolar extrafloral nectaries, almost the size of a mature leaf´s, a very characteristic feature and useful in the identification of the specimens. Stryphnodendron conicum can also be confused with S. pulcherrimum, with which sometimes occurs sympatrically, but the new species shows larger and fewer leaflets, evident nerves on both surfaces of the blade, extrafloral nectaries of the rachillae conical and the calyx about half the length of the corolla. Stryphnodendron microstachyum, another morphologically close species, has flowers with the calyx usually glabrous to subglabrous (very rarely sparsely pubescent) and a glabrous to rarely subglabrous corolla, besides shorter inflorescences (usually 6.5 – 10 cm long) and vegetatively, the leaflets of this species are usually widely oblong, oblong-rhombic to oblongovate, whereas in S. conicum they are elliptic to elliptic-ovate.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF84FFFE39D3087C460EBF37.taxon	distribution	Distribution and habitat: — This taxon is restricted to areas of campinas on sandy soil, near watercourses, in the region of the lower Trombetas river in Pará state (municipalities of Porto Trombetas and Oriximiná). The area of occurrence of this taxon corresponds to the phytogeographic province Jari-Trombetas. Conservation: — Vulnerable (VU B 2 ab (ii, iii )) [AOO = 8.000 km 2, EOO not measurable]. The species occurs in a very restricted area in Amazonia that is subject to intensive mining activities, and preliminarily this would assign it the status of Critically Endangered. However, there are at least six records of the new species within its limited distribution (one of them in a conservation unit, FLONA Saracá), and based on the available data we assign Stryphnodendron conicum the status of Vulnerable.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF84FFFE39D3087C460EBF37.taxon	description	Phenology: — Specimens with flowers were collected from September to January and with immature fruits in July, mature fruits from September to November.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF84FFFE39D3087C460EBF37.taxon	materials_examined	Additional specimens examined (paratypes): — BRAZIL. Pará: Oriximiná, Porto Trombetas, estrada C – Leste, 11 November 2005, fl. / fr., R. D. Ribeiro et al. 542 (RB). Oriximiná, FLONA Saracá – Taquera / IBAMA, Porto Trombetas, 16 January 2003, fl., R. P. Salomão et al. 981 (MG). Oriximiná, Rio Trombetas, margem da estrada, Mineração Santa Patrícia, 08 July 1980, im. fr., C. A. Cid et al. 1360 (INPA, MG, MO, NY). Oriximiná, BR 163, estrada que dá acesso a Perimetral Norte, a 14 km da Cachoeira Porteira, 09 September 1986, C. A. Cid Ferreira et al. 7637, im. fr. (INPA, MO, NY). Porto Trombetas, Estrada da Mina, lado esquerdo, beira da estrada, 20 November 1985, E. Soares 31, fl. (INPA). Rio Trombetas, Monte Branco, jazida de Bauxita da Alcoa-Mineração, 06 October 1982, fl., J. Revilla et al. 6960 (INPA).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF82FFFF39D30F7043D4BABF.taxon	materials_examined	— Type: BRAZIL. Minas Gerais. “ Fermoso provinciae Minas Geraes ”, s. d., Martius 1820 (lectotype M 0218783!, designated here, isolectotypes F!, M!, NY!, MO!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF82FFFF39D30F7043D4BABF.taxon	description	Trees 2.5 – 6 (– 10) m tall, rhytidome thick, grooved, slightly suberous; 1 pair of nectaries present on the branch right below the insertion of the petiole (a nectary at each side), slightly verruciform to depressed. Leaves with (2 –) 3 – 4 pair of pinnae, opposite to subopposite; 3 – 5 (– 7) pairs of leaflets, opposite to subopposite; petiolar nectaries absent; leaflets (2 –) 2.5 – 5 (– 9) × (0.2 –) 1.5 – 4.5 (– 6) cm, apex usually round, sometimes slightly emarginate, rarely truncate or asymmetrically round, very rarely acute, margin flat, coriaceous, slightly discolor to discolor, glabrous on both surfaces, very rarely sparsely puberule along the midrib on lower surface, unilateral tuft of trichomes on lower surface absent. Inflorescences of simple thyrsi; cymulae of 3 – 4 (– 5) spikes; spike with (9 –) 10 – 12 (– 20) cm long; spike prophylls deciduous, rarely late deciduous, 3 – 4 cm long. Flowers monoclinous, whitish to yellowish, anther gland sessile. Fruit a nucoid legume, strongly curved to spiral, flat-compressed to subturgid, 8 – 10 × 1.5 – 1.8 (– 3) cm, valves coriaceous to woody, light-brown yellowish and ferruginous-pulverulent, glabrescent (Fig. 1 C). Vernacular names: — Barbatimão, Barbatimão do Norte or Barbatimão do Cerrado.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF82FFFF39D30F7043D4BABF.taxon	discussion	Nomenclatural notes: — Bentham (1875) referred as type of S. coriaceum at least two syntypes, indicated merely by their collection sites (Bahia and Minas Gerais states in Brazil). The author’s comments in this work (Bentham 1875) suggest that it was written simultaneously with Flora brasiliensis, and that the latter was expected to be released first, but it was published only in the following year. In Flora brasiliensis, Bentham (1876) provides more details of the types mentioned in his 1875 work, allowing the association of Martius s. n. and Martius 1820 to the specimens collected in Bahia and Minas Gerais, respectively. The latter was selected as lectotype.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF82FFFF39D30F7043D4BABF.taxon	distribution	Distribution and habitat: — Stryphnodendron coriaceum occurs in areas of low rainfall and commonly grows on sandy soils, mainly in campo-cerrado, cerrado, cerradão, tabuleiro or caatinga from Northeastern Brazil (Piauí, Maranhão, Ceará and Bahia states), Central-Western (states of Goiás and Tocantins, in the region of Jalapão) and Northern Minas Gerais adjacent to Bahia (Serra da Capivara) and Goiás states. The sample Sampaio 206 is referred to occur in restinga vegetation (Ceará), but was collected in a Botanical Garden and there is no information whether it is a natural or cultivated occurrence. The reference of this species to Pará state refers to a cultivated tree grown from seeds collected in campos cerrados in Maranhão, and Glaziou´s record in Rio de Janeiro (São João da Barra, Glaziou 9753 at P) is uncertain but highly unlikely. Conservation: — Least Concern (LC) [AOO = 160.000 km 2, EOO = 798,498.836 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF82FFFF39D30F7043D4BABF.taxon	biology_ecology	Phenology: — Stryphnodendron coriaceum was collected with flowers from January to April, June and July and in September to November. Specimens with fruits were collected in April and May, and from July to November.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF82FFFF39D30F7043D4BABF.taxon	materials_examined	Selected specimens examined: — BRAZIL. Bahia: Formosa do Rio Preto, ESEC Serra Geral do Tocantins, 5 km L do acampamento da Vila dos Prazeres, 04 October 2018, fl., M. F. Simon 3482 (CEN). Ceará: São Gonçalo do Amarante, Jardim Botânico de São Gonçalo do Amarante, 26 October 2017, V. S. Sampaio et al. 206 (EAC). Maranhão: Carolina, Km 14, estrada vicinal Carolina-Babaçulândia, 20 August 2010, fl., J. B. Pereira 232 (CEN)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFF39D30A88435EBE17.taxon	materials_examined	— Type: BRAZIL. Goiás, Cristalina, elev. 1350 m, E. P. Heringer 11182 (holotype RB 132217!, isotypes HB!, K!, MG!, UB!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFF39D30A88435EBE17.taxon	description	Subshrubs 20 – 30 (– 35) cm tall, usually cespitose, bearing a well-developed, woody underground root-like system. Leaves with 5 – 7 (– 9) pairs of pinnae; (5 –) 6 – 10 (– 17) pairs of leaflets; rachis nectary 1, verruciform; blade chartaceous, margin glabrous, leaflets (4 –) 6 – 10 (– 13) × 3 – 7 mm, discolor, glabrous on both surfaces, unilateral tuft of trichomes on the lower surface absent. Inflorescences of simple thyrsi; cymulae of usually solitary spikes, sometimes geminate, vinaceous to reddish. Flowers monoclinous, purplish, pinkish or vinaceous. Fruit a follicule, straight to very rarely slightly curved, flat-compressed, (4.5 –) 5.5 – 7.5 × 1.5 – 2.2 cm, valves atrovinaceous to dark-brown (Fig. 2 D, E).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFF39D30A88435EBE17.taxon	distribution	Distribution and habitat: — Stryphnodendron cristalinae occurs in campo limpo, campo sujo, campo cerrado or in more open physiognomies of the cerrado, often associated with sandy or rocky soils. The species has a very restricted distribution, being known only in the municipality of Cristalina (Goiás state), from the Serra dos Cristais and sometimes reaching the limits of urban areas. The specimens collected at the Água Limpa farm (University of Brasília Experimental Station, Brasília, Federal District) were cultivated from seeds brought from Cristalina. Conservation: — Endangered (EN B 1 ab (i, iii) + 2 ab (ii, iii) [AOO = 12.000 km 2, EOO = 1,021.914 km 2]. Only small populations of this taxon were found during recent expeditions to its area of occurrence, in extremely reduced areas bordered by soybean plantations. No records in conservation units were found.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFF39D30A88435EBE17.taxon	description	Phenology: — This species was collected with flowers in March to May, and July to January. Specimens with fruits were collected in March, April and November.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFF39D30A88435EBE17.taxon	materials_examined	Selected specimens examined: — BRAZIL. Goiás: Cristalina, ao longo da BR 050, 7 km ao sul do entroncamento com a BR 040, 20 September 2016, fl., R. C. Pires & M. F. Simon 100 (CEN). Cristalina, Serra dos Cristais, 9 km by road S of Cristalina on road to Catalão, 4 April 1973, fr., W. R. Anderson et al. 8086 (US).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFD39D30E514557B883.taxon	materials_examined	— Type: BRAZIL. Rio de Janeiro, Macaé, estrada para Glicério, ca. 2 km do Córrego do Ouro, 42 ° 04 ’ W, 22 ° 13 ’ S, 23 June 1987, Lima et al. 2988 (holotype RB 265629!, isotype MBM!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFD39D30E514557B883.taxon	diagnosis	Diagnosis: Stryphnodendron dryaticum is very similar to S. polyphyllum, differing by its yellow-pubescent rachis (vs. glabrous in S. polyphyllum), leaflets 3 – 7 (– 9) mm wide (vs. 1.5 – 4 mm) and rachillae with (1 –) 2 – 7 nectaries (vs. 1 to rarely absent or 2). The flowers are pale green (vs. vinaceous to reddish in S. polyphyllum) with densely yellowpubescent calyx (vs. glabrous) and yellow-pubescent corolla (vs. glabrous), glabrous ovary (vs. pubescent) turning to flat-compressed to rarely subturgid nucoid legumes (vs. subturgid) 1.6 – 2.2 cm wide when mature (vs. 1.3 – 1.5 cm), usually with glossy valves. Stryphnodendron dryaticum also resembles S. flavotomentosum, but it can distinguished by its yellow-pubescent rachis (vs. yellow-tomentose in S. flavotomentosum), rachis with 1 nectary (vs. 3 – 5 nectaries), yellow-pubescent corolla (vs. yellow-sericeous), dorsal fold of the same color as the anther (vs. the anther darker than the dorsal fold), glabrous ovary (vs. yellow-tomentose) and fruit 1.6 – 2.2 cm wide (vs. 3 – 3.5 cm). Trees 6 – 18 (– 20) m tall, the branches lenticellate, lacking extrafloral nectaries, glabrous, ferruginous-pulverulent, glabrescent, very densely ferruginous-pulverulent at the apex. Leaves with petioles (3.5 –) 4.5 – 8 (– 11) cm long, subglabrous, very sparsely ferruginous-pulverulent only near the base, glabrescent, extrafloral nectary 1, inserted at 1.4 – 3 cm from the base of the petiole, ca. 1 × 0.5 mm, verruciform; pinnae (6 –) 10 – 13 pairs, subopposite, turning alternate towards the apex of the rachis, the insertion of each pair spaced in (0.7 –) 1 – 1.6 cm; rachis striate, yellowpubescent and ferruginous-pulverulent, more densely near the insertion of the pinnae, remaining parts glabrescent; extrafloral nectary 1, inserted at (2 –) 4 – 5 mm below the distal pair of pinnae, ca. 0.5 – 0.7 × 0.3 – 0.5 mm, verruciform; stipels late deciduous, ca. 1 mm long, linear; 2 nd degree petiolules ca. 0.5 mm long, the same color as the upper surface of the blade, yellow-pubescent; leaflets (9 –) 12 – 20 pairs; rachillae densely yellow-pubescent, ferruginous-pulverulent near the insertion of the leaflets, extrafloral nectaries (1 –) 2 – 7, inserted at ca. 2 mm below the distal pair of leaflets, ca. 0.2 × 0.2 mm long, verruciform, usually covered by the indumentum; stipel deciduous, not seen; insertion of leaflets usually alternate, subopposite towards the apex of the rachillae, blade asymmetrical, usually elliptic to elliptic-oblong, rarely ovate, the ones of the proximal pairs usually elliptic, the distal pairs usually obovate, (4 –) 5 – 11 × 3 – 7 (– 9) mm, apex usually retuse, very rarely rounded, margin sub-revolute, entire and pubescent, base asymmetrical, the proximal side of the blade usually obtuse, rarely truncate, distal side rounded, the proximal side of distal pairs of leaflets usually acute, distal side rounded, chartaceous, subconcolor, upper surface dark, pubescent, lower surface lighter, densely pubescent, unilateral tuft of trichomes on the lower surface of the leaflets present, usually prolonged up to the 3 rd or 4 th pairs of basal nerves, both surfaces opaque, venation brochidodromous, the nerves weakly evident and slightly prominent on the upper surface, except for the midrib, sulcate, on the lower surface weakly evident, prominent. Inflorescences of simple thyrsi, color unknown; cymulae of solitary spikes to more frequently geminate, rarely in groups of 3 - 4, spike (6.5 –) 7 – 15 cm long; bracts deciduous, not seen; peduncle (0.8 –) 1.1 – 2 cm long, very densely ferruginous-pulverulent, glabrescent after fruiting, subcylindrical to flattened; rachis densely ferruginous-pulverulent, very sparsely yellow-pubescent, glabrescent after fruiting, ca. 1.5 mm thick. Flowers monoclinous and diclinous (only staminate flowers observed), pale green; calyx campanulate, toothed, densely yellow-pubescent, ca. 1 mm long, light green; corolla campanulate, 2.5 – 3 mm long, petals fused up to 1 / 2 of its length, yellow-pubescent, more sparsely at the tube, color unknown, lobes acute, erect; stamens 4.5 – 5.5 mm long, filaments white to rarely pinkish, anthers ca. 0.5 mm long, vinaceous, nectaries stipitate, conspicuous fold present at the dorsal side of the anthers, only beyond the insertion of the filaments, the same color as the anthers; ovary glabrous, subsessile to shortly stipitate, stigma porate; prophylls early deciduous, ca. 0.5 mm long, shell-shaped, yellow-pubescent. Fruit sessile, nucoid legume, straight to more frequently slightly curved, apex rounded, usually apiculate, base rounded to acute, sometimes attenuate, flat-compressed to rarely subturgid, seeds prominent and evident, the edges thick, 8.2 – 16.5 × 1.6 – 2.2 cm, valves subcoriaceous to coriaceous, dark brown, reddish, ferruginous-pulverulent and glabrescent in immature fruits, mature fruits usually glossy. Seeds (5 –) 8 – 15, not seen.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFD39D30E514557B883.taxon	description	Vernacular names: — Juerana, Barbatimão, Angico Rosa, Cana-fístula.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFD39D30E514557B883.taxon	etymology	Etymology: — The name of this new species refers to its distribution at the Atlantic coastal forest, which Martius (1858) called Dryades in his classification of the Brazilian floristic regions at Flora brasiliensis.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFD39D30E514557B883.taxon	discussion	Remarks: — This new species is often found in herbarium collections named as S. polyphyllum - the arboreous habit and vegetative aspects are indeed very similar to this species, though with longer petioles, velutinous blades on both surfaces and a very evident unilateral tuft of trichomes on the lower surface. The series of mistakes that led to the recognition of these samples as S. polyphyllum begun in Flora brasiliensis, when Bentham (1876) used a specimen with unusual characteristics collected at Serra dos Órgãos, Rio de Janeiro state, by Gardner (Gardner 364) when describing the type variety of S. polyphyllum. Several duplicates of this collection in different European herbaria were analyzed, and they showed different collection dates and different references in respect to habitat, the one found at BM reading “ places with shrubby vegetation ”. The duplicates found at K had the typical fruits of S. dryaticum, but the flowers of S. polyphyllum, described as reddish and glabrous. However, the sheet that carries the flowering branch shows a different collection date, and most probably it is a case of mixed samples. Since then, several specimens collected at the mountains of Rio de Janeiro state have been treated as S. polyphyllum, despite showing very distinctive features regarding extrafloral nectaries of the rachis and rachillae, indumentum of flowers and fruit type (Table 2) when compared to the type specimen of this species.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFD39D30E514557B883.taxon	distribution	Distribution and habitat: — This species occurs in the Brazilian Atlantic Forest, known from Espírito Santo to the north coast of São Paulo state. Most samples were gathered in Rio de Janeiro state, usually on forested slopes (rarely in secondary forest). The only specimen registered in Espírito Santo was collected in the forest near the entrance of the municipality of Domingos Martins, an area heavily subjected to anthropic disturbances, reducing the forest areas to small fragments. Conservation: — Least Concern (LC) [AOO = 48.000 km 2, EOO = 41,718.640 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFD39D30E514557B883.taxon	description	Phenology: — Specimens of this taxon were collected with flowers throughout the year, except in February, June and August; specimens with fruits were collected from March to June and December.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF83FFFD39D30E514557B883.taxon	materials_examined	Additional specimens examined (paratypes): — BRAZIL. Espírito Santo: Domingos Martins, Rodovia BR 262, próximo à entrada da cidade, 06 December 1984, fl., G. Hatschbach & J. M. Silva 48675 (MBM, RB). Domingos Martins, 23 May 1993, fr., J. M. L. Gomes 1897 (VIES, 2 sheets). Rio de Janeiro: Angra dos Reis, Praia do Manduri, 23 ° 02 ’ S, 44 ° 38 ’ W, 17 November 1993, fl., M. T. Z. Toniatto et al. 30163 (UEC). Itatiaia, P. N. do Itatiaia, km 4 e 5 da estrada, 13 September 1974, fl., P. Occhioni 6198 (RFA). Itatiaia, P. N. do Itatiaia, km 6 e 7, subida para o parque, 14 September 1979, fl., P. Occhioni & E. M. O. Martins 6191 (RFA). Itatiaia, P. N. do Itatiaia, estrada principal km 5 – 6, 11 March 1975, fr., P. Occhioni 7041 (RB). Itatiaia, Benfica, 1918, fl. / fr., C. Porto s. n. (RB 10407). Nova Friburgo, 24 January 1881, fl., Glaziou s. n. (RB 43905). Nova Iguaçu, Reserva Biológica do Tinguá, levantamento fitossociológico, indivíduo 373, parcela 17, 22 May 1994, sterile, collector unknown s. n. (RB 363846). Nova Iguaçu, Mata do Moacir, 10 April 1996, fl., P. R. Farag et al. 222 (RB). Parati, Morro das Laranjeiras, acesso pela Rio Santos, lado esquerdo da estrada em direção à São Paulo, APA Cairuçu, 125 m, 16 March 1993, fr., E. A. Filho & J. Caruso 131 (RB). Parati, APA Cairuçu, Trilha de Ponta Negra para Cairuçu das Pedras, 500 m, 11 May 1991, fr., L. Sylvestre et al. 535 (RB). Parati, Mamanguá, na beira da mata para Praia do Sono, 21 November 1989, fr., M. C. Marques 154 (RB). Parati, Morro das Carneiras, acesso pela BR 101, lado esquerdo em direção à São Paulo, APA Cairuçu, 18 March 1993, im. fr., M. C. Marques et al. 377 (RB). Parati, APA Cairuçu, Córrego dos Micos, Morro Pedra Rolada, 120 – 500 m, 19 October 1993, fl., R. Marquete 1237 (RB). Parati, APA Cairuçu, Trilha de Ponta Negra para Cairuçu das Pedras, 12 April 1994, fr., R. Marquete 1595 (RB). Parati, Praia Negra, Picada para o Morro do Cambucá, 100 – 540 m, 23 March 1992, im. fr., C. Farney et al. 3096 (RB). Petrópolis, January 1959, fl., P. Occhioni 1587 (RFA). Rio de Janeiro, Cantagallo, 1861, fl., Peckolt 596 (BR). Rio de Janeiro, Cantagalo, Mata do Cambucá, 15 December 1967, fl., L. Emygdio 2582 (RB). Rio de Janeiro, Cantagallo, s. d., fl., Peckolt 15 (W). Silva Jardim, Reserva Biológica de poço das Antas, caminho da Faz. Portuense, s. d., fr., H. C. Lima & G. Martinelli 1716 (RB). Silva Jardim, Reserva Biológica de Poço das Antas, 22 ° 30 – 22 ° 33 ’ S, 42 ° 15 ’ – 42 ° 19 ’ W, 06 October 1993, fl., C. M. B. Correia et al. 359 (RFA). Teresópolis, Parque Serrano, 15 December 1979, fr., H. C. Lima et al. 1180 (RB). Teresópolis, s. d., sterile, Schwacke 4876 (RB). Magdalena, October 1934, fl. / fr., S. Lima 267 (RB). Orgains Mountains (Serra dos Órgãos), 3000 ft, March 1838, May 1837 or July 1837, fl., G. Gardner 364 (BM, G, K, W). São Paulo: Ubatuba, Trilha do Camburi, km 01 da Rodovia Rio / Santos, 14 April 1994, fr., A. Furlan et al. 1372 (HRCB, SP).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9EFFE339D30D864659B84A.taxon	materials_examined	— Type: COSTA RICA. Atlant. Küste, Savannen und Wälder am Rio Hondo, elev. 150 – 300 m, June 1903, Pittier 16997 (lectotype G 00367833!, designated here, isolectotypes US!, NY!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9EFFE339D30D864659B84A.taxon	description	Trees 10 – 40 m tall, rhytidome gray to grayish-white. Leaves with (5 –) 8 – 11 pairs of pinnae; (8 –) 10 – 16 (– 18) pairs of leaflets; petiolar nectary 1, verruciform with an elongated base; leaflets (8 –) 10 – 22 (– 37) × (7 –) 10 – 15 (– 20) mm, usually oblong-rhombic, distal leaflets usually obovate, proximal leaflets sometimes elliptic, chartaceous, discolor, upper surface usually glabrous, sometimes sparsely puberulent to sparsely pubescent, lower surface usually sparsely puberulent, sometimes puberulent to pubescent, unilateral tuft of trichomes on the lower surface present. Inflorescences of simple thyrsi, whitish to yellowish white; cymulae of geminate to ternate spikes; spikes 11 – 15 cm long. Flowers monoclinous, corolla tube glabrous to subglabrous, yellow-pubescent at the apex of the lobes, yellow. Fruit a nucoid legume, straight to slightly curved, turgid, seeds slightly prominent, valves subcoriaceous, inconspicuously nerved. Vernacular names: — Vainilla, Vainillo, Guanacaste, Guinazo, Gallinazo (Costa Rica); Guachipelín-colorado (Nicaragua).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9EFFE339D30D864659B84A.taxon	discussion	Nomenclatural notes: — According to Stafleu & Cowan (1979), Harms´s type specimens were deposited in B, but the type of S. excelsum was most probably destroyed during WWII as we could not find any specimen that matched the protologue. The duplicate deposited in G was selected as lectotype. Remarks: — Stryphnodendron excelsum belongs to a group of Amazonian species bearing medium-sized leaflets, yellowish inflorescences and indumentum in calyx and corolla, distinguished by the features shown in table 5.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9EFFE339D30D864659B84A.taxon	distribution	Distribution and habitat: — Stryphnodendron excelsum is exclusive of Central America, occurring in Nicaragua, Costa Rica and Panama, where it usually grows near watercourses, often in areas of tropical forest at low altitudes of the Atlantic coast. It is worth emphasizing that the scarcity of collections from Nicaragua may not be correlated with the low density of individuals, but rather due to the difficult access to the Atlantic coast covered by hygrophilous forests in an economically undeveloped region with a low population density (Sutton 1989). Conservation: — Least Concern (LC) [AOO = 92.000 km 2, EOO = 154,909.586 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9EFFE339D30D864659B84A.taxon	description	Phenology: — This species was collected with flowers in December and from March to June, with immature fruits in January, August and with mature fruits in May.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9EFFE339D30D864659B84A.taxon	materials_examined	Selected specimens examined: — COSTA RICA. Heredia: Corazón de Jesus, along Sarapiquí road, about 3 km northeast of Corazón de Jesus, 05 January 1974, fr., G. S. Hartshorn 1331 (F). Puntarenas, 22 km to the South of San Isidro del General on the road to the Panarian border, 917 ’ N, 8340 ’ W, 31 March 1993, fl., D. J. Maqueen & A. Macqueen 608 (NY).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9FFFE339D308A44439B339.taxon	materials_examined	— Type: BRAZIL. Mato Grosso, “ Habitat ad Município Barra do Garças, 265 km NNE de Xavantina, Serra do Roncador ”, s. d., G. Eiten & L. Eiten 8956 (holotype SP 129687!, isotypes K!, NY!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9FFFE339D308A44439B339.taxon	description	Trees 5 – 20 (– 32) m tall, rhytidome suberous; 1 pair of nectaries present on the branch right below the insertion of the petiole (a nectary at each side), slightly verruciform to depressed. Leaves with 4 pairs of pinnae, opposite; (4 –) 5 – 6 pairs of leaflets, opposite to subopposite; petiolar nectaries absent; leaflets 1.8 – 5.3 × 2.3 – 4 cm, apex usually slightly emarginate, sometimes round, rarely truncate or asymmetrically round, very rarely acute, margin flat, coriaceous, discolor, upper surface glabrous, velutinous only along the midrib, lower surface velutinous, unilateral tuft of trichomes on lower surface absent. Inflorescences of simple thyrsi; cymulae of geminate to ternate spikes, spikes 7 – 8 cm long; spike prophylls deciduous, not observed. Flowers monoclinous, whitish to greenish white, anther gland sessile. Fruit a nucoid legume, cochleate, subturgid, 8 – 10 × 3 – 3 cm, valves woody, light-brown yellowish and ferruginouspulverulent, glabrescent. Vernacular names: — Rosquinha, Barbatimão (Brazil, Mato Grosso).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9FFFE339D308A44439B339.taxon	distribution	Distribution and habitat: — Stryphnodendron fissuratum was originally described as having a restricted distribution in northern Mato Grosso state in Brazil (Martins 1980 a, 1980 b and 1981), being usually found in cerradão and semideciduous forests. This study expanded the species´s known distribution to the Lago do Cedro Extractive Reserve in Goiás state, and the Santa Cruz region in Bolivia, in a mosaic vegetation including semi-deciduous forests, wooded savannas and flooded savannas. The herbarium sampling of this species is rather scarce, and the labels frequently refer to it as being rare in the collecting sites. In addition to ecological issues that may be associated with the low frequency of the species, the anthropic factor seems to be contributing to its scarcity. The species is considered toxic to the cattle, as described at herbarium labels and from talks with locals during expeditions to Central Brazil, and further supported by toxicological studies (Rodrigues et al. 2005), which leads farmers to cut individuals of this species indiscriminately.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9FFFE339D308A44439B339.taxon	conservation	Conservation: — Near Threatened (NT) [AOO = 32.000 km 2, EOO = 149,939.603 km 2] The area of occurrence of Stryphnodendron fissuratum is larger than that defined by IUCN (2012, 2022) criteria to be considered an Endangered species. However, since it is commonly suppressed in areas used for pasture and is frequently referred as rare in its occurrence sites, the species is more adequately considered as. Near Threatened.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9FFFE339D308A44439B339.taxon	biology_ecology	Phenology: — Flowering and fruiting specimens of Stryphnodendron fissuratum were registered in June, August and September.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9FFFE339D308A44439B339.taxon	materials_examined	Selected specimens examined: — BRAZIL. Goiás: Aruanã, Reserva Extrativista Lago do Cedro, 03 September 2013, fr., R. F. Haidar 1733 (CEN). Mato Grosso: Xavantina, Base Camp 2, ca. 5 km NW da base de campo, 26 September 1968, fl., R. M. Harley & R. Souza 10273 (RB).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D30BF64414B8B4.taxon	materials_examined	— Type: BRAZIL. Espírito Santo. Baixo Guandú, Fazenda Galiléia, no barranco do rio próximo a estrada do Mutum Preto em Baixo Guandu, lado esquerdo, 11 December 1991, D. A. Folli 1519 (holotype ESA 108191!, isotypes CVRD!, VIES!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D30BF64414B8B4.taxon	description	Trees, 13 – 18 m. Leaves with 9 – 12 pairs of pinnae; 10 – 14 pairs of leaflets; petiolar nectary 1, verruciform; leaflets 6 – 14 × 5 – 8 mm, obovate, proximal leaflets oblong to elliptic, chartaceous, subconcolor, upper surface yellow-pubescent, lower surface yellow-tomentulose, unilateral tuft of trichomes on the lower surface present and prolonged up to the 3 rd pair of basal veins. Inflorescences of simple thyrsi, brownish; cymulae of solitary to ternate spikes; spikes 8 – 10.5 cm long. Flowers monoclinous, corolla yellow-sericeous, yellow. Fruit a nucoid legume, straight, flat-compressed, seeds slightly prominent, valves woody, inconspicuously nerved.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D30BF64414B8B4.taxon	distribution	Distribution and Habitat — Stryphnodendron flavotomentosum is known only in the Atlantic Forest domain from Western Espírito Santo state, municipalities of Baixo Guandu and Marilândia, where it has been collected in forested slopes and river ravines. Conservation — Data Deficient (DD) [AOO = 8 km ², EOO not measurable]. The species is known only from a few collections and the area where it occurs is considered very poorly collected. However, recent collecting efforts have revealed populations of several taxa previously known from limited herbarium samples, and it is possible that intensive field work might increment the available sampling of S. flavotomentosum and broaden its current distribution.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D30BF64414B8B4.taxon	description	Phenology — C ollected with flowers and fruits in December.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D30BF64414B8B4.taxon	materials_examined	Selected specimens examined: — BRAZIL. Espírito Santo: Aracruz, atrás do tanque de efluentes, Fábrica, 02 February 1995, fr., J. N. Neves 97 (VIES). Baixo Guandu, Fazenda Galileia, no barranco do rio, próximo à estação do Mutun Preto, 11 December 1991, fl., A. D. Folli 1519 (VIES).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D308934681BD44.taxon	materials_examined	— Type: BRAZIL. Rondônia, Track from Mutumparaná to Rio Madeira, 30 November 1968, Prance et al. 8995 (holotype MG 039652!, isotypes F!, NY!, R!, S!, US!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D308934681BD44.taxon	description	Trees 6 – 12 (– 15) m tall. Leaves with 6 – 8 pairs of pinnae, 5 – 12 (– 14) pairs of leaflets, petiolar nectary 1, conical; leaflets (6 –) 11 – 15 (– 37) × (3 –) 5 – 7 (– 9) mm, usually oblong-rhombic, distal leaflets obovate, proximal leaflets sometimes elliptic, chartaceous to subcoriaceous, discolor, upper surface subglabrous to puberulent, lower surface pubescent, unilateral tuft of trichomes on the lower surface present. Inflorescences of simple thyrsi, pinkish to yellowish; cymulae of solitary to ternate spikes; spikes 4 – 6.5 cm long. Flowers monoclinous, corolla tube and lobes usually glabrous, sometimes subglabrous, pinkish. Fruit a nucoid legume, slightly curved, subturgid, seeds slightly prominent, valves subcoriaceous, inconspicuously nerved. Vernacular names: — Paricarana (Brazil, Amazonas).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D308934681BD44.taxon	distribution	Distribution and habitat: — Stryphnodendron foreroi occurs in terra firme forests of Western Amazon (Southwest Sector and Solimões / Western Amazon phytogeographic provinces), and less frequently in the Xingu-Madeira province of Southeastern Amazon. It is found in the Brazilian states of Amazonas, Mato Grosso and Rondônia, as well as in this last state´s bordering areas with Bolivia and Peru. Conservation: — Least Concern (LC) [AOO = 52.000 km 2, EOO = 1,056,471.887 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D308934681BD44.taxon	description	Phenology: — The species was collected with flowers in November and January, with fruits from May to July.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE039D308934681BD44.taxon	materials_examined	Selected specimens examined: — BRAZIL. Amazonas: Coari, 29 September 2005, fr., E. S. C. Gurgel et al. 451 (MG). Rondônia: Porto Velho, margem direita do rio Madeira, 6 km do porto da bal, 23 November 2013, fl., M. F. Simon 2054 (CEN, RON).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE139D30DAF4684B9FB.taxon	description	Trees 8 – 20 m tall, rhytidome smooth, gray to dark-brown. Leaves with (7 –) 9 – 12 pairs of pinnae; (7 –) 9 – 18 pairs of leaflets; petiolar nectary 1, verruciform; leaflets (5 –) 7 - 13 × (2.5 –) 3 - 5 mm, usually oblong, distal leaflets usually obovate, proximal leaflets sometimes elliptic, chartaceous, discolor, upper surface puberule to pubescent, lower surface densely puberulent to pubescent, bilateral tuft of trichomes on the lower surface present, usually prolonged up to the middle part of the blade. Inflorescences of simple thyrsi; cymulae of geminate spikes; spikes 10 – 11 cm long. Flowers monoclinous, corolla tube sparsely pubescent, lobes yellow-pubescent, yellowish. Fruit a nucoid legume, slightly curved, subturgid, seeds slightly prominent, valves subcoriaceous, inconspicuously nerved. Vernacular names: — Pashaco, Pashaca (Peru); Taco-macho, Taco-blanco, Taco-macino (Bolivia); Fava (Brazil).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE139D30DAF4684B9FB.taxon	discussion	Remarks: — Stryphnodendron guianense var. glandulosum has always been considered an atypical taxon within the species, and our analysis corroborates that the diagnostic features of this variety are too distrepant from S. guianense var. guianense with respect to number and position of nectaries, indument of flowers and foliolules, as well as by their allopatric distribution. For this reason, S. guianense var. glandulosum is elevated as a distinct species.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE139D30DAF4684B9FB.taxon	distribution	Distribution and habitat: — The species is distributed only in Western Amazon (Acre state in Brazil, northern Bolivia, western Peru and southern Colombia), in areas of tropical forest of terra firme, sometimes near watercourses in seasonally flooded areas. The few records of this species outside these areas are cultivated trees in the Emílio Göeldi Museum (Belém, Pará state in Brazil), and do not correspond to the natural distribution of S. glandulosum. Conservation: — Least Concern (LC) [AOO = 52.000 km 2, EOO = 311,438.075 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE139D30DAF4684B9FB.taxon	biology_ecology	Phenology: — Stryphnodendron glandulosum was collected with flowers in September, November, January and February and with fruits from May to September.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9CFFE139D30DAF4684B9FB.taxon	materials_examined	Selected specimens examined: — BOLIVIA. Ballivian, Triunfo, Rio Matos, 29 August 1976, fr., E. Meneces & W. Terceros 07 (INPA). PERU. Manu, Parque Nacional Manu, Rio Manu, Cocha Cashu Station, 17 September 1986, fl., R. B. Foster 11402 (F).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9DFFE139D30834438CBD8F.taxon	materials_examined	— Type: BRAZIL. Minas Gerais, Serra do Cipó, 12 November 1959, Heringer 7361 (lectotype RB 00584092!, designated here, isolectotypes NY!, UB!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9DFFE139D30834438CBD8F.taxon	description	Subshrubs 30 – 50 cm tall, usually cespitose, bearing a well-developed, woody underground root-like system, very rarely shrubs to 2 m tall. Leaves with (4 –) 5 – 8 (– 9) pairs of pinnae; (5 –) 7 – 12 pairs of leaflets; rachis nectaries 4, patelliform; blade chartaceous, margin glabrous, leaflets (6 –) 8 – 14 (– 18) × (2 –) 4 – 6 (– 9) mm, discolor, glabrous on both surfaces, unilateral tuft of trichomes on the lower surface absent. Inflorescences of simple thyrsi; cymulae of usually solitary spikes, sometimes geminate, rarely ternate, vinaceous to reddish. Flowers monoclinous or diclinous, vinaceous. Fruit a follicule, straight, flat-compressed, 6.5 – 9.5 (– 11) × 1.5 – 1.9 cm, valves atrovinaceous to dark-brown. Nomenclatural Notes: — Heringer & Rizzini (1966) indicated two syntypes for S. gracile, both deposited in RB (RB 118804 / Rizzini s. n. and RB 121073 / E. P. Heringer 7361). The gathering selected by us as lectotype (Heringer 7361, barcode RB 00584092!) is mounted in two separate sheets, and the one bearing the label corresponds to the lectotype.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9DFFE139D30834438CBD8F.taxon	distribution	Distribution and habitat: — This species occurs on slopes and rocky outcrops, campos rupestres and high altitude campos cerrados of the Serra do Cipó, Minas Gerais state, usually in shallow and rocky soils. The collection Glaziou 14649 reportedly gathered in Barbacena (Minas Gerais) corresponds to a mixed set of S. cristalinae (P) and S. adstringens (G, P and R), thus the distribution of the taxon is still considered restricted to the site of the type collection. Conservation: — Endangered (EN B 1 ab (i, ii, iii, iv) + 2 ab (i, ii, iii, iv )) [AOO = 16.000 km 2, EOO = 279.553 km 2]. Although there are registers of this species in conservation units, its distribution area is very reduced and there are indications that it forms small populations.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9DFFE139D30834438CBD8F.taxon	description	Phenology: — This species was collected with flowers from March to June and from September to December, while specimens with fruits were collected in February, April and May.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9DFFE139D30834438CBD8F.taxon	materials_examined	Selected specimens examined: — BRAZIL. Minas Gerais: Jaboticatubas, Serra do Cipó, km 113, ao longo da Rodovia Lagoa Santa – Conceição do Mato Dentro – Diamantina, 15 April 1972, fr., A. B. Joly et al CFSC 1534 (SP). Santana do Riacho, Serra do Cipó, 24 October 1974, fl., G. Hatschbach 35285 (MBM, UEC).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9DFFE639D30DF845F2B9D7.taxon	description	Treelets to trees 2 – 12 (– 20) m tall. Leaves with 8 – 11 pairs of pinnae; (6 –) 8 – 14 (– 18) pairs of leaflets; petiolar nectary 1, verruciform with an elongated base; leaflets (4 –) 6 - 15 (– 23) × 4 - 8 (– 13) mm, usually oblong to oblong-rhombic, distal leaflets usually obovate, proximal sometimes elliptic, chartaceous to subcoriaceous, discolor, upper surface usually glabrous to subglabrous, sometimes sparsely puberule, lower surface subglabrous to puberule, unilateral tuft of trichomes on the lower surface present, sometimes inconspicuous. Inflorescences of simple thyrsi, pinkish; cymulae of solitary to 4 - ternates spikes; spikes 8 – 16 (– 18.5) cm long. Flowers monoclinous or diclinous, corolla glabrous, pinkish. Fruit a nucoid legume, straight to slightly curved, flat-compressed, seeds slightly prominent, valves subcoriaceous, inconspicuously nerved. Vernacular names: — Talapirinria (Brazil, Maranhão).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9DFFE639D30DF845F2B9D7.taxon	distribution	Distribution and habitat: — This taxon occurs in terra firme forests of Northeastern Amazon (Atlantic Coastal, Roraima and Jari-Trombetas phytogeographic provinces). In addition to these areas, S. guianense also occurs in Northeastern Brazil (Ceará and Maranhão states) in secondary vegetation often associated with sandy soils. Conservation: — Least Concern (LC) [AOO = 40.000 km 2, EOO = 1,265,120.766 km 2]	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9DFFE639D30DF845F2B9D7.taxon	description	Phenology: — Specimens with flowers were collected in February and March, June and July, and from October to December, specimens with fruits were collected in May.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9DFFE639D30DF845F2B9D7.taxon	materials_examined	Selected specimens examined: —— BRASIL. Ceará: Ubajara, Horto de Ubajara, 03 November 1995, fr., M. A. Oliveira s. n. (EAC 23383). Pará: Breu Branco, approx. 40 km S of Tucuruí, then 5 km W on old logging road, 22 November 1981, fl., D. C. Daly 1529 (INPA). FRENCH GUIANA. Saül, along airport road on outskirts of Saül, 08 December 1982, fl., S. A. Mori & B. Boom 15361 (P).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE639D30810437EBD52.taxon	materials_examined	— Type: BRAZIL. Goiás, Alto Paraíso de Goiás, a ca. 87 km ao N da cidade, 30 October 1979, Equipe IBGE [“ Heringer ”] 2636 (holotype IBGE 15208!, isotypes HB!, K!, MO!, NY!, RB!, UEC!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE639D30810437EBD52.taxon	description	Subshrubs 50 – 100 cm tall, usually cespitose, bearing a well-developed, woody underground root-like system. Leaves with (4 –) 8 – 10 pairs of pinnae; (11 –) 13 – 19 pairs of leaflets; rachis nectaries 2 - 3, verruciform; blade chartaceous, margin glabrous, leaflets (6 –) 8 – 14 (– 18) × (2 –) 4 – 6 (– 9) mm, discolor, usually glabrous on both surfaces, sometimes sparsely pubescent along the midrib on the lower surface, unilateral tuft of trichomes on the lower surface absent. Inflorescences of simple thyrsi; cymulae of usually solitary spikes, sometimes geminate. Flowers monoclinous. Fruit a follicule, straight to very slightly curved, flat-compressed, 11 – 14 × 1 – 1.5 cm, valves vinaceous to dark-brown (Fig. 2 A).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE639D30810437EBD52.taxon	distribution	Distribution and habitat: — Stryphnodendron heringeri is endemic to Chapada dos Veadeiros, Goiás state in Brazil. The type specimen of this species was collected in a location referred to as “ Serra da Cristalina ”, which is a very frequent toponym for sites abundant in crystals. This particular location at Chapada dos Veadeiros is not related to Serra dos Cristais to where S. cristalinae is endemic, having a different geomorphological structure and flora. Natural populations of S. heringeri are usually found in areas of campo cerrado, campo sujo or campo limpo, usually associated with sandy and lateritic, shallow soils. Conservation: — Critically Endangered (CR B 1 ab (ii, iii, iv )) [AOO = 8.000 km 2, EOO = 62.393 km 2] The species shows a very reduced distribution in threatened areas not covered by legal protection.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE639D30810437EBD52.taxon	description	Phenology: — This species was collected with flowers in October and November, with fruits from February to March and October to November.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE639D30810437EBD52.taxon	materials_examined	Selected specimens examined: — BRAZIL. Goiás: Água Fria de Goiás, 12 km ao N de Água Fria, em direção ao lago Jacuba, 20 November 2015, fl., M. F. Simon 2659 (CEN). São João da Aliança, Chapada dos Veadeiros, ca. De 87 km ao Norte da cidade, 30 November 1979, fr., E. P. Heringer et al. 2636 (IBGE, NY).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE539D30D9C4528BA9A.taxon	materials_examined	— Type: BRAZIL. Minas Gerais, Formoso, Parque Nacional Grande Sertão Veredas, margem esquerda do Rio Preto, 05 November 1989, Walter et al. 510 (holotype RB 375879!, isotypes ESA! IBGE!, K!, RFA!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE539D30D9C4528BA9A.taxon	diagnosis	Diagnosis: Stryphnodendron holosericeum resembles Stryphnodendron rotundifolium var. villosum, but differs by its fusiform petiolar nectary, usually immersed, sometimes slightly prominent, darkened, 3 – 4 × 0 – 0.5 mm (vs. verruciform with an elongated base, 2.5 – 3.5 × 0.5 – 1.5 mm), 2 nd degree petiolules 0.2 – 0.3 mm long (vs. 0.5 – 1 mm), leaflets canescent, densely villous to sericeous on both surfaces (vs. subglabrous to sparsely villous at the upper surface, lower surface sparsely pubescent to villous, rarely densely villous), calyx hirsute at the upper half of the lobes or ciliate only at the apex (vs. glabrous, sparsely ciliate at the apex of the lobes), ovary glabrous (vs. white-pulverulent to whitepubescent) and prophylls late deciduous, densely yellow-tomentose and - pulverulent (vs. early deciduous, villous).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE539D30D9C4528BA9A.taxon	description	Trees 6 – 10 m tall, the branches lenticelate, lacking extrafloral nectaries, velutinous, glabrescent, the indumentum usually concentrated near the insertion of the leaves and the apex of the branches, yellow-velutinous at the apex. Leaves with petioles 3.5 – 5.5 cm long, velutinous, extrafloral nectary – 1, inserted at 0.3 – 0.7 cm from the base of the petiole, 3 – 4 × 0 – 0.5 mm, fusiform, usually immersed at the petiole, sometimes slightly prominent, darkened; pinnae (6 –) 9 – 10, subopposite to opposite, the insertion of each pair spaced in (1 –) 1.3 – 2.2 cm; rachis striate, velutinous; extrafloral nectaries 1 – 2, inserted at (1 –) 3 – 5 mm below the distal pair of pinnae, 1 – 2 × 0 – 0.5 mm, usually fusiform with the central region cylindrical and slightly elevated, sometimes more rounded, darkened; stipels deciduous, not seen; 2 nd degree petiolules 0.2 – 0.3 mm long, densely yellow-velutinous; leaflets (4 –) 6 – 11 pairs, the proximal and distal pairs of pinnae bearing fewer leaflets; rachillae velutinous, extrafloral nectaries 2 – 3 (– 4), inserted at 0.5 – 2 mm below the distal pair of leaflets, (0.5 –) 1 × 0.2 – 0.5 mm, verruciform to fusiform, darkened; stipel deciduous, not seen; leaflets usually alternate, subopoosite only at the distal pairs, blade slightly asymmetrical, moslty orbicular, sometimes ellipticorbicular or elliptic, rarely widely ovate, distal leaflets usually ovate, (6 –) 8 – 13 (16) × (6 –) 8 – 13 mm, apex usually rounded to weakly retuse, at the distal leaflets sometimes emarginate, margin subrevolute, entire and velutinous, base asymmetrical, the proximal side of the blade usually truncate, sometimes widely rounded, distal side usually rounded, the proximal side of distal pairs of leaflets usually, chartaceous, subconcolor, upper surface slightly darker, lower surface lighter, both surfaces canescent, densely villous to sericeous, unilateral tuft of trichomes on the lower surface of the leaflets present, usually prolonged up to the 4 th or 5 th pairs of secondary nerves, venation brochidodromous, the nerves not evident and weakly prominent on both surfaces. Inflorescences of simple thyrsi, whitish; cymulae of solitary spikes to more frequently geminate, rarely ternate, spikes 9.5 – 10.5 cm long; bracts deciduous, not seen; peduncle 1.5 – 2.2 cm long, densely ferruginous-pulverulent and velutinous, subcylindrical; rachis yellow-tomentose to yellowvelutinous, sparsely ferruginous-pulverulent, cylindrical, ca. 1.5 mm thick. Flowers monoclinous and diclinous (only staminate flowers seen), white; calyx campanulate, apiculate, hirsute at the upper half at the lobes or ciliate only at the apex, very rarely subglabrous, ca. 1 mm long; corolla 3 – 3.5 mm long, tubular, fused up to 1 / 2 of its length, glabrous, usually hirsute only at the apex of the lobes, lobes acute, erect; stamens 5 – 6.5 mm long, anthers ca. 0.5 mm long, lilac, nectaries stipitate, conspicuous fold present at the dorsal side of the anthers, only beyond the insertion of the filaments; ovary subsessile, glabrous, stigma porate; pistiloid sometimes present in staminate flowers; prophylls late deciduous, ca. 1 mm long, shell-shaped, densely yellow-tomentose and ferruginous-pulverulent. Fruits not seen.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE539D30D9C4528BA9A.taxon	etymology	Etymology: — The name of this species refers to the characteristic indumentum at the leaflets.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE539D30D9C4528BA9A.taxon	discussion	Remarks: — Stryphnodendron holosericeum are medium-sized trees that are frequently mistaken as S. rotundifolium var. villosum, due to the indumentum of branches and leaflets. However, S. holosericeum have a very distinct petiolar extrafloral nectary, with a fusiform shape and immersed to slightly prominent at the petiole, darker than the petiole and inserted very close to its base. Besides the new species, this type of nectary is only found in S. velutinum. Additional differences between S. holosericeum and S. rotundifolium var. villosum are listed on table 3.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE539D30D9C4528BA9A.taxon	distribution	Distribution and habitat: — The species is so far only known in cerrado areas of Grande Sertão Veredas National Park in Northwestern Minas Gerais state, bordering Bahia and Goiás states. Stryphnodendron holosericeum grows predominantly on sandy soils. Conservation: — Endangered (EN B 1 ab (i, iii) + 2 ab (ii, iii )) [AOO = 16.000 km 2, EOO = 208.685 km 2]. Although there are records of Stryphnodendron holosericeum collected in protected areas as mentioned above, its distribution is very restricted and it is still a poorly known species, vulnerable to anthropogenic actions for agricultural use in the region.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE539D30D9C4528BA9A.taxon	biology_ecology	Phenology: — Stryphnodendron holosericeum was collected with flowers from July to November; fruiting unknown.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF9AFFE539D30D9C4528BA9A.taxon	materials_examined	Additional specimens examined (paratypes): — BRAZIL. Minas Gerais: Formoso, Parque Nacional Grande Sertão Veredas, nascente do Rio Preto, cerrado próximo à Vereda do Veado, 850 m, 15 ° 24 ’ 20 ” S, 45 ° 55 ’ 14 ” W, 28 November 1997, fl., D. Alvarenga et al. 1088 (IBGE, RB). Formoso, Parque Nacional Grande Serão Veredas, estrada de chão entre Maria Antônia e Salto (Estrada da Faz. Mato Grande), 15 ° 21 ’ 10 ” S, 46 ° 00 ’ 09 ’ W, 18 October 1995, fl., R. C. Mendonça et al. 3212 (RB, RFA). Formoso, Faz. Matinha, ca. 750 m, 08 October 1988, fl., B. A. S. Pereira 1336 (IBGE, MO, RB, RFA). Formoso, km 28 da estrada Formoso / Buritis, Vale do Rio Ponte Grande, 15 ° S, 46 ° 10 ’ W, 15 September 1996, fl., B. A. S. Pereira & D. Alvarenga 3221 (IBGE, K, RB, RFA). Cachoeira Grande, July 1862, fl., collector unknown s. n. (R 64038).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFE539D30AD44792BE73.taxon	materials_examined	— Type: VENEZUELA. Ter. Fed. Amazonas, Cano Guazuriapana, Rio Atabapo near San Fernando de Atabapo, 16 May 1954, Level 104 (holotype NY 3369!, isotype F!, K!, US!, VEN)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFE539D30AD44792BE73.taxon	description	Shrubs to treelets 3 – 8 m tall. Leaves with 3 – 4 pairs of pinnae; (5 –) 6 – 10 pairs of leaflets; petiolar nectary 1, verruciform with an elongated base; leaflets (8 –) 11 - 18 × (6 –) 9 – 11 cm, usually oblong to oblong-rhombic, rarely ovate, distal leaflets obovate, proximal sometimes elliptic, chartaceous, discolor, glabrous on both surface, unilateral tuft of trichomes on the lower surface present, usually prolonged along the midrib, rarely absent. Inflorescences of simple thyrsi; cymulae of solitary to geminate spikes; spikes (5 –) 6.5 – 8 cm long. Flowers diclinous, corolla tube sparsely pubescent, lobes yellow-pubescent, yellowish. Fruit a nucoid legume, straight to slightly curved, shortly dilated at the base, flat-compressed, usually slightly constricted between the seeds, seeds slightly prominent, valves coriaceous, inconspicuously nerved.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFE539D30AD44792BE73.taxon	discussion	Remarks: — Stryphnodendron levelii belongs to a group of Amazonian species with medium-sized leaflets, yellowish inflorescences and indumentum in calyx and corolla, distinguished by the features shown in table 5.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFE539D30AD44792BE73.taxon	distribution	Distribution and habitat: — Stryphnodendron levelii is endemic to the region of the Atabapo / Venezuela river in Southeastern Venezuela, occurring in shrubby grass savannas, generally at low altitudes (95 to 130 m), and small patches of predominantly herbaceous-shrub vegetation surrounded by lowland forests (matas de terras baixas). Conservation: — Endangered (EN B 1 a, b (i, ii, iii) + 2 ab (i, ii, iii )) [AOO = 12.000 km 2, EOO = 59.399 km 2]. Stryphnodendron levelii occurs in a very restricted area subject to constant disturbance due to the expansion of anthropogenic activities.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFE539D30AD44792BE73.taxon	biology_ecology	Phenology: — Stryphnodendron levelii was collected with flowers in May, with immature fruits in September and mature in February, March and May.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFE539D30AD44792BE73.taxon	materials_examined	Selected specimens examined: — VENEZUELA. Territorio Federal Amazonas, Depto. Atabapo: San Fernando de Atabapo, Right bank of Cano Cupueni, 0.5 km above mouth, 16 February 1954, fr., B. Maguire et al. 37695 (NY, US).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFEA39D30EBC46A2BA42.taxon	materials_examined	— Type: BRAZIL. “ Crescit in sylvis primaevis flumini Amazonum conterminis circum Ega [Tefé] ”, October 1831, Poeppig 2738 (holotype W 0002775!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFEA39D30EBC46A2BA42.taxon	description	Trees 8 – 24 m tall, rhytidome gray to brownish gray. Leaves with 5 – 9 (– 11) pairs of pinnae; (4 –) 6 – 11 (– 14) pairs of leaflets; petiolar nectary 1, conical and laterally flat; leaflets (5 –) 6 – 20 (– 22) × (– 3) 5 – 14 (– 16) cm, usually widely oblong, oblong-rhombic to oblong-ovate, distal leaflets usually obovate, proximal sometimes elliptic, chartaceous to subcoriaceous, usually discolor, rarely subconcolor, upper surface usually subglabrous to sometimes sparsely puberule, rarely glabrous, lower surface puberule, unilateral tuft of trichomes on the lower surface usually absent, sometimes inconspicuous. Inflorescences of simple thyrsi, pinkish to purplish; cymulae of geminate to 5 - ternate spikes; spikes (4.6 –) 6.5 – 10 cm long. Flowers monoclinous or diclinous, corolla tube glabrous, lobes usually glabrous, very rarely subglabrous, purplish to reddish. Fruit a nucoid legume, usually straight, rarely slightly curved, flat-compressed to subturgid, seeds slightly prominent, valves coriaceous, inconspicuously nerved. Vernacular names: — Barasana-ke-re-nee-nee, Makuna ho-wa-ra, Puinave ken, Yukuna pe-tee-ree, Barasana pwa-go (Colombia).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFEA39D30EBC46A2BA42.taxon	distribution	Distribution and habitat: — Stryphnodendron microstachyum is exclusive of non-flooded terra firme forests associated with clay soil, more frequently in Western Amazon (Solimões / Western Amazon and Southwest Sector phytogeographic provinces), in Brazil (Acre and Amazonas states) and neighboring areas of Colombia, Northern Bolivia, and Peru. It is less frequently found in Eastern Amazon (Xingu-Madeira province). Conservation: — Least Concern (LC) [AOO = 40.000 km 2, EOO = 2,412,385.990 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFEA39D30EBC46A2BA42.taxon	description	Phenology: — Flowering specimens were collected from October to January and in July, fruiting specimens from May to July.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF99FFEA39D30EBC46A2BA42.taxon	materials_examined	Selected specimens examined: — COLOMBIA. Amazonas-Vaupes, Rio Apaporis, Jinogoje (near mouth of Rio Piraparana, 20 June 1952, fr., R. E. Shultes & I. Cabrera 16795 (MO, NY, U). PERU. Loreto: Chacra de Cesar Vela, sudeste de la granja del Sr. Berrera, (Aguaytia), Coronel Portillo, Padre Abad, 27 October 1972, fl., J. Schunke V 5462 (F, INPA, MO, NY, U).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30AAC4652BF13.taxon	materials_examined	— Type: FRENCH GUIANA. Saül, Monts La Fumée, 22 November 1982, Mori & Boom 15236 (holotype P 00077203! [transferred from CAY], isotypes NY!, P!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30AAC4652BF13.taxon	description	Trees 40 – 45 m tall, rhytidome smooth; branch necteries absent. Leaves with (1 –) 2 (– 3) pairs of pinnae, opposite; 3 – 4 pairs of leaflets, opposite to subopposite; petiolar nectary 1, lenticular-immersed; leaflets 7.3 – 14 × 4.5 – 6 cm, apex usually widely acuminate, sometimes obtuse, rarely round, margin flat to slightly undulate, subcoriaceous, discolor, glabrous on both surfaces, unilateral tuft of trichomes on lower surface absent. Sinflorescence a pleiothyrsus; cymulae of solitary, geminate to ternate spikes, spike 4.2 – 5.5 cm long; spike prophylls late deciduous, ca. 3 mm long. Flowers monoclinous, purplish, anther gland stipitate. Fruit a nucoid legume, straight, flat-compressed to slightly subturgid, 18 – 23 × 2.5 – 3.6 cm, valves coriaceous to woody, dark-brown and ferruginous-pulverulent, glabrescent.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30AAC4652BF13.taxon	distribution	Distribution and habitat: — Stryphnodendron moricolor has an extremely restricted distribution, occurring in non-flooded forests located near La Fumée Waterfall in French Guiana (Saül region), at altitudes from 200 to 400 m. Conservation: — Data Deficient (DD) [AOO = 8.000 km 2, EOO not measurable]. Stryphnodendron moricolor has a very limited distribution range with only four collections from the 1980´s from two localities, however, the information currently available to us precludes a proper assessment of the conservation status of the taxon.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30AAC4652BF13.taxon	description	Phenology: — The species was collected with flowers in November, with immature fruits in March and with mature fruits in August.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30AAC4652BF13.taxon	materials_examined	Selected specimens examined: — FRENCH GUIANA. Saül: Grand Boeuf Mort Trail, 19 August 1987, fr., S. Mori et al. 18690 (P).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30F5C43BFBC57.taxon	materials_examined	— Type: BRAZIL. Pará, Rodovia Belém – Brasília km 306, 10 March 1960, Oliveira 997 (holotype IAN 106945!, isotypes NY!, UB!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30F5C43BFBC57.taxon	description	Trees 16 – 21 (– 26) m tall; branch nectaries absent. Leaves with 2 – 4 pairs of pinnae, opposite; 2 – 4 pairs of leaflets, opposite; petiolar nectary 1, verruciform with an elongated base, sometimes with a circular and slightly concave apex; leaflets (3.5 –) 5 – 10 (16.5 –) × (2 –) 2.8 – 5 (– 7.5) cm, apex usually round, sometimes obtuse, very rarely acute to truncate, margin revolute, sometimes undulate, coriaceous, subconcolor, upper surface glabrous, lower surface puberule to pubescent, unilateral tuft of trichomes on lower surface absent. Sinflorescence a pleiothyrsus, rarely a diplothyrsus; cymulae of solitary to ternate spikes, spike 3.5 – 5.5 (– 8) cm long; spike prophylls late deciduous, 4 – 7 mm long. Flowers monoclinous or diclinous, purplish, anther gland sessile. Fruit a nucoid legume, straight, turgid, moniliform, 8.5 – 11.5 × 1.5 – 1.8 cm, valves coriaceous, reddish dark-brown and ferruginous-pulverulent, glabrescent. Vernacular names: — Taxirana, Tachi-rana, Caicubi (Brazil, Amazonas).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30F5C43BFBC57.taxon	distribution	Distribution and habitat: — Stryphnodendron occhionianum is endemic to terra firme forests in Northern Brazil. With restricted distribution and few individuals sampled, S. occhionianum occurs in two Amazonian phytogeographic provinces: the Atlantic Coast province (Pará and Amapá states) near the mouth of the Amazonas river, and the Roraima province (north limit with the Guiana Shield). Conservation: — Least Concern (LC) [AOO = 24.000 km 2, EOO = 285,468.525 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30F5C43BFBC57.taxon	description	Phenology: — The species was collected with flowers in August and with fruits in June and August and November.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF96FFEA39D30F5C43BFBC57.taxon	materials_examined	Selected specimens examined: — BRAZIL. Pará: Região do Jari, estrada entre Planalto A e Tinguelim, km 15, 07 August 1970, N. T. Silva 3260 (IAN). Rondônia: Porto Velho, ao longo da BR 364, 8 km E de Jaci-Paraná, ramal 1 km S, linha de transmissão Jirau-Porto-Velho, 27 June 2012, fl., M. F. Simon 1597 (CEN, RON).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF97FFE839D30BA84591BEE6.taxon	description	(Fig. 6)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF97FFE839D30BA84591BEE6.taxon	materials_examined	— Type: VENEZUELA. Território Amazonas, Rio Orinoco, along left bank of river just below mouth of Rio Ventuari, 125 – 150 m, 16 June 1959, Wurdack & Adderley 42999 (holotype IAN 114608!, isotypes F!, IAN! K!, NY!, U!, US!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF97FFE839D30BA84591BEE6.taxon	diagnosis	Diagnosis: Stryphnodendron orinocense is morphologically similar to S. guianense, but vegetatively it differs by its conical rachis nectary ca. 1 × 1 mm (vs. verruciform, ca. 0.5 × 0.5 mm), prophylls late deciduous, yellow-pubescent (vs. deciduous and pubescent). Reproductively S. orinocense is distinguished by its shortly apiculate calyx (vs. inconspicuous lobes); corolla usually tubulate, rarely tubulate-campanulate 3 – 3.5 mm long, with petals fused up to 2 / 3 of its length (vs. campanulate 2 mm long, fused at 1 / 2 of its length), and longer stamens 5 – 6 mm (vs. 3 – 3.5 mm). Trees 8 – 10 m tall, the branches lenticellate, lacking extrafloral nectaries, ferruginous-pulverulent, sparsely pubescent, glabrescent, ferruginous-pulverulent at the apex. Leaves with petioles 3.5 – 4.2 cm long, ferruginouspulverulent, glabrescent, sparsely yellow-pubescent on the ventral surface, extrafloral nectary 1, inserted at ca. 1 cm from the base of the petiole, ca. 4 × 1 mm, verruciform with an elongated base; pinnae (5 –) 7 – 8 (– 10) pairs, subopposite to opposite, the insertion of each pair spaced in 1.5 – 2 cm; rachis striate, ferruginous-pulverulent and sparsely yellowpubescent, glabrescent at the dorsal region; extrafloral nectaries (1 –) 2, inserted at 2.5 – 3 mm below the distal pair of pinnae, 1 – 1.5 × 1 mm, conical; stipels deciduous, not seen; 2 nd degree petiolules ca. 1 mm long, the same color as the upper surface of the blade, yellow-pubescent; leaflets 8 – 11 pairs; rachillae sparsely ferruginous-pulverulent and yellow-pubescent, glabrescent on the dorsal surface, extrafloral nectaries 1 – 2, inserted 1 – 2 mm below the distal pair of leaflets, 1 × 1 mm long, verruciform; stipel deciduous, not seen; insertion of leaflets usually alternate, frequently subopposite near the apex and base of the rachillae, blade asymmetrical, usually widely oblong to oblong-rhombic, the ones of the proximal pairs sometimes elliptic, the distal pairs usually obovate, rarely cordiform, (8 –) 10 – 15 × (6 –) 8 – 11 mm, apex usually retuse to rounded, at the distal pairs of leaflets usually emarginate, margin sub-revolute, entire and puberule, base asymmetrical, the proximal side of the blade usually widely rounded, sometimes obtuse, at the distal pairs usually acute, distal side usually narrowly rounded to acute, subcoriaceous, discolor, upper surface nigrescent, glabrous to subglabrous, lower surface lighter, puberule, unilateral tuft of trichomes on the lower surface of the leaflets present, not prolonged, opaque on both surfaces, venation brochidodromous, the nerves weakly evident and immersed in the upper surface, evident and prominent on the upper surface. Inflorescences of simple thyrsi, color unknown; cymulae of geminate to ternate spikes, spikes 9 – 14 cm long; bracts deciduous, not seen; peduncle 1 – 2.5 cm long, ferruginous-pulverulent, subcylindrical; rachis sparsely ferruginous-pulverulent and yellow-pubescent, cylindrical, ca. 1 mm thick. Flowers monoclinous, white; calyx crateriform, shortly apiculate, glabrous to subglabrous, ca. 0.5 mm long, white; corolla 3 – 3.5 mm long, tubular or rarely tubular-campanulate, petals fused up to 2 / 3 of its length, glabrous, color unknown, lobes acute, erect; stamens 5 – 6 mm long, filament color unknown, anthers ca. 0.3 mm long, color unknown, nectaries stipitate, conspicuous fold present at the dorsal side of the anthers, approximately the same size of the thecae; ovary shortly stipitate, glabrous, style color unknown, stigma porate; prophylls late deciduous, ca. 0.5 mm long, shell shaped, yellow-pubescent. Mature fruits not seen.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF97FFE839D30BA84591BEE6.taxon	etymology	Etymology: — The epithet “ orinocense ” refers to the river in Venezuela along which the new species grows.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF97FFE839D30BA84591BEE6.taxon	discussion	Remarks: — Stryphnodendron orinocense is morphologically similar to S. guianense, from which it differs by a series of vegetative and reproductive features summarized on table 4. Additionally, the two species show distinct geographical distributions, S. orinocense occurring in a much narrower area around the Orinoco River in Northwestern Amazonia.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF97FFE839D30BA84591BEE6.taxon	distribution	Distribution and habitat: — Stryphnodendron orinocense is only known from sites along the Orinoco river in Southern Venezuela, in the Northwest Sector phytogeographic province of the Amazon region. Conservation: — Data Deficient (DD) [AOO = 8.000 km 2, EOO not measurable]. There are no recent collections of S. orinocense and it is known from a very reduced area. Current data about in situ populations of Stryphnodendron orinocense are not available, as well as information about threats in the area, hindering a precise assessment of its conservation status.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF97FFE839D30BA84591BEE6.taxon	description	Phenology: — The species was collected with flowers in May, June and August and with immature fruits in August.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF97FFE839D30BA84591BEE6.taxon	materials_examined	Additional specimens examined (paratypes): — VENEZUELA. Território Amazonas: Cano Cupaven, Rio Orinoco at mouth of Rio Atabapo, 11 May 1954, fl., J. S. Level 75 (RB, F, US, NY). Atabapo, alrededores de Caserío Guahibo “ La Venturosa ”, ribera del Orinoco, a 3 km al oeste de Santa Bárbara del Orinoco, 118 m, 03 ° 56 ’ N, 67 ° 09 ’ W, 12 August 1982, fl. / im. fr, F. Guanchez 1867 (NY).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF94FFE939D30D2C45CEB8FF.taxon	description	Trees 15 – 26 m tall; branch nectaries. Leaves with 2 – 3 pairs of pinnae, opposite; 3 – 4 (– 5) pairs of leaflets, opposite; petiolar nectary 1, verruciform; leaflets 4.2 – 10 (– 12.8) × 2.9 – 6.5 cm, apex usually apiculate, sometimes acute, margin flat to slightly revolute, slightly undulate, subcoriaceous, discolor, upper surface glabrous, lower surface usually puberule, sometimes sparsely pubescent to pubescent, more densely along the midrib, unilateral tuft of trichomes on lower surface absent. Sinflorescence a pleiothyrsus; cymulae of solitary, geminate to ternate spikes, spike 4 – 5.5 cm long; spike prophylls late deciduous, ca. 2 mm long. Flowers monoclinous, purplish, anther gland sessile. Fruit a nucoid legume, usually straight, sometimes slightly curved, subturgid, 7 – 8.5 × 1.3 – 1.8 cm, valves coriaceous, reddish dark-brown and ferruginous-pulverulent, glabrescent. Vernacular names: — Tachi-rana, Taxirana or rarely Cumarú.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF94FFE939D30D2C45CEB8FF.taxon	materials_examined	Nomenclatural note: — Our searches found several duplicates of the collection referred as type of S. paniculatum, and one of the specimens deposited in W was selected as lectotype.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF94FFE939D30D2C45CEB8FF.taxon	discussion	The specimen indicated by Martins (1975 a) as the type of S. rizzinianum A. Ducke s. n. (07 / XI / 1935, RB 29044) has two different collection dates on the label, one referring to the flowering (07 / XI / 1935) and the other, to the fruiting (05 / IV / 36) sample, as frequently seen in Ducke´s gatherings. The name is validly published only by the part of the specimen that is coherent with the protologue, in this case, the flowering branch. The isolectotype in NY indicates a collection number 288, but this same number is also used in a Moraceae and should be ignored.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF94FFE939D30D2C45CEB8FF.taxon	distribution	Distribution and habitat: — Stryphnodendron paniculatum is endemic to the Brazilian Amazon, occurring along rivers in areas of non-flooded terra firme forests in Rondônia, Amazonas and Pará states. The species is mostly distributed along the Solimões and Amazonas rivers and occupies the Amazonian territory in its central portion in the east-west direction. It grows in the phytogeographic provinces of Southeast, Western Solimões-Amazônia, Manaus, Xingu-Madeira in the state of Amazonas (Central-Western Amazon) and rarely in the provinces of Jarí-Trombetas and Atlantic-Coastal (Central-Eastern Amazon). Stryphnodendron paniculatum is reported by Ribeiro et al. (1999) as a species with rare occurrence in the Ducke Forest Reserve (Manaus, Amazonas), in areas of plateau forest (higher areas with well drained clayey soil and poor in nutrients). It´s abundance in the remaining areas is unknown.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF94FFE939D30D2C45CEB8FF.taxon	description	Conservation: — Least Concern (LC) [AOO = 40.000 km 2, EOO = 681,799.151 km 2]. Phenology: — Specimens were collected with flowers in February and from August to October, with fruits in May, July and August.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF94FFE939D30D2C45CEB8FF.taxon	materials_examined	Selected specimens examined: — BRAZIL. Amazonas: Rio Negro, próximo ao Rio Arara, 01 May 1973, fr., A. A. Loureiro s. n. (INPA 37917). Rondônia: Porto Velho, canteiro de obras da UHE Jirau, linha de transmissão Jirau-Porto Velho, 20 October 2010, fl., M. F. Simon 1058 (CEN).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF95FFEC39D308C8422BBC46.taxon	materials_examined	— Type: PERU. Loreto, Requena, bosque inundable, ca. 800 m de la Base Yarina, margen derecha del caño Yarina, en la Zona Reservada del río Pacaya, margen izquierda del Río Ucayali, 22 March 1977, Encarnación E – 1071 (holotype G 0252076!, isotypes K!, US!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF95FFEC39D308C8422BBC46.taxon	diagnosis	Diagnosis: Stryphnodendron platycarpum is morphologically related to S. guianense, but differs by its verruciform petiolar nectary ca. 1.5 × 0.5 mm (vs. verruciform with an elongated base, 2 – 3 × 1.5 – 2 mm in S. guianense); conical rachis nectary (vs. verruciform); calyx glabrous, ciliate only at the apex of the lobes, shortly apiculate (vs. glabrous to rarely subglabrous, usually ciliate, lobes not evident), fruits 11 – 13.5 × 2.2 – 2.7 cm (vs. 5.5 – 7 × 1.1 – 1.4 cm). Small-sized trees (height unknown), the branches lenticellate, lacking extrafloral nectaries, glabrous, ferruginouspulverulent, glabrescent, ferruginous-pulverulent. Leaves with petioles 3 – 4.5 cm long, ferruginous-pulverulent, glabrescent, extrafloral nectary 1, inserted at 1.3 – 2 cm from the base of the petiole, ca. 1.5 × 0.5 mm, verruciform; pinnae 7 – 9 (– 10) pairs, subopposite to opposite, the insertion of each pair spaced in 1 – 1.5 cm; rachis striate, sparsely ferruginous-pulverulent and sparsely yellow-pubescent, glabrescent; extrafloral nectaries 2 – 4, inserted at 2 – 3 mm below the distal pair of pinnae, ca. 1 × 1 mm, conical; stipels deciduous, not seen; 2 nd degree petiolules ca. 1 mm long, the same color as the upper surface of the blade, yellow-pubescent; leaflets (5 –) 8 – 11 pairs; rachillae yellowpubescent, glabrescent, extrafloral nectaries 2 – 9, inserted at 1 – 2 mm below the distal pair of leaflets, ca. 0.5 × 0.5 mm long, verruciform; stipel deciduous, not seen; leaflets usually alternate, or usually subopposite near the base or the apex of the rachillae, blade asymmetrical, usually oblong-rhombic, sometimes elliptical at the proximal pairs, obovate at the distal pairs, (4 –) 6 – 11 × (– 3) 5 – 7 mm, apex usually rounded, rarely retuse, margin flat, slightly thickened, entire and puberule, base asymmetrical, the proximal side of the blade usually obtuse, sometimes widely rounded, distal side usually narrowly rounded, rarely acute, the base of distal pairs sometimes acute, membranaceous-chartaceous, discolor, upper surface usually glaucous, opaque, glabrous, lower surface lighter, opaque, puberule, unilateral tuft of trichomes on the lower surface of the leaflets present, not prolonged, venation brochidodromous, the nerves not visible and immersed at the upper surface, evident and prominent at the lower surface. Inflorescences of simple thyrsi, color unknown; cymulae of solitary to ternate spikes, spike 7.2 – 7.7 cm long; bracts deciduous, not seen; peduncle 1.5 – 1.7 cm long, ferruginous-pulverulent, cylindrical; rachis yellow-pulverulent, sparsely yellow-pubescent, cylindrical, ca. 1 mm thick. Flowers monoclinous, pinkish; calyx campanulate, shortly apiculate, glabrous, ciliate only at the apex of the lobes, ca. 0.5 mm long, color unknown; corolla ca. 2 mm long, campanulate, petals fused up to 1 / 2 of its length, glabrous, color unknown, lobes acute, erect; stamens ca. 3.5 mm long, color unknown, anthers ca. 0.3 mm long, nectaries stipitate, conspicuous fold present at the dorsal side of the anthers, ca. the same size as the thecae; ovary shortly stipitate, glabrous, stigma porate; prophylls deciduous, ca. 0.5 mm long, shell-shaped with an elongated base, pubescent. Fruit sessile, nucoid legume, straight to very rarely slightly curved, apex apiculate, base attenuate to acute, flat-compressed with slightly prominent seeds when immature, mature fruit not seen, 11 – 13.5 × 2.2 – 2.7 cm, valves coriaceous, dark brown to reddish brown, ferruginous-pulverulent, glabrescent. Seeds 8 – 10, not seen.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF95FFEC39D308C8422BBC46.taxon	etymology	Etymology: — The epithet “ platycarpum ” refers to the Greek word meaning abnormally flattened and enlarged fruits.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF95FFEC39D308C8422BBC46.taxon	discussion	Remarks: — Stryphnodendron platycarpum forms the larger fruits among the Amazonian multifoliolate taxa, with medium-sized leaflets and glabrous corolla (rarely subglabrous). Though the only fruiting sample available does not refer their degree of maturity, only mentioning “ legumbre carnoso subterminal ”, the fruits are flat-compressed with a prominent margin and slightly prominent seeds, which is more frequently observed in this genus for fruits that are not completely mature and might indicate the phenological phase of this specimen, reinforcing the size discrepancy between this new species and the remainder of its group. This species has been referred as a “ arbusto bejucoso ”, that is, a prostrate bush growing along the riverside; however, most specimens describe it as arboreous individuals, without mentioning the height. Stryphnodendron platycarpum is morphologically close to S. guianense, from which it differs by its flowers with shortly apiculate calyx, verruciform and reduced petiolar extrafloral nectaries and extrafloral nectaries of the rachis conical. The species are also distinct in their geographical distributions, S. guianense being found at Eastern Amazon, whilst S. platycarpum occurs at Western Amazon. Another similar species that occurs sympatrically with S. platycarpum, S. microstachyum has only 1 - 2 conical extrafloral nectaries at the rachis, a larger verruciform petiolar extrafloral nectary with an elongated base, and arboreous habit with medium to large sized individuals, as well as fruits usually curved, subturgid with prominent seeds. Further distinctive features are listed on table 4.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF95FFEC39D308C8422BBC46.taxon	description	Besides having the largest fruits (11 – 13.5 × 2.2 – 2.7 cm) within this group, the new species is easily recognized by its pinkish flowers with ciliate, shortly apiculate calyx lobes and campanulate, glabrous corolla. Diagnostic vegetative features include verruciform and reduced (0.5 × 0.5 mm) extrafloral nectaries of the rachillae inserted between almost all pairs of leaflets, and reduced petiolar extrafloral nectary (ca. 1.5 × 0.5 mm).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF95FFEC39D308C8422BBC46.taxon	distribution	Distribution and habitat: — The new species is known only in Western Amazon (phytogeographic province Sector Southwest), in the Iquitos region in Peru. Pristine areas of this region are covered by different types of forests and all of them show great species richness, including the periodically flooded forests known as tahuampa (Gentry, 1989). The specimens collected so far are very brief on the description of the collecting sites, but samples collected near the Ucayali river indicated a bosque inundable, or flooded forest, cited by Gentry (1989) as common in the region. Conservation: — Data Deficient (DD) [AOO = 8.000 km 2, EOO not measurable]. The new species is known to occur in just a few locations within a very restricted area, with no recent collections and registers of populations in conservation units. However, the information currently available with regards to the threats in the area is not sufficient to allow an accurate assessment of the conservation status of the taxon.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF95FFEC39D308C8422BBC46.taxon	description	Phenology: — This species was collected with flowers in October and fruits in March.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF95FFEC39D308C8422BBC46.taxon	materials_examined	Additional specimens examined (paratypes): — PERU. Depto. Loreto: Mishuyaco, near Iquitos, 100 m, October-November 1929, fl., G. Klug 47 (NY). Iquitos, 26 October 1927, fl., A. Ducke s. n. (RB 20182, K, US).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30BA84642BF4F.taxon	materials_examined	— Type: BRAZIL. Distrito Federal, Brasília, “ Crescit ad campos in Goiás ”, 5 November 1961, Heringer 8733 (holotype RB 113247!, isotypes HB!, R!, UB!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30BA84642BF4F.taxon	description	Subshrubs 25 – 50 cm tall, usually cespitose, bearing a well-developed, woody underground root-like system. Leaves with (2 –) 3 – 5 (– 7) pairs of pinnae; (4 –) 6 – 8 (– 13) pairs of leaflets; rachis nectaries (1) 2 – 3, patelliform to rarely verruciform; blade subcoriaceous to coriaceous, margin glabrous, leaflets (0.8 –) 1.2 – 2 (– 3.5) cm, discolor, glabrous on both surfaces, sometimes sparsely pubescent on the lower surface near the insertion of the secondary petiolule, unilateral tuft of trichomes on the lower surface absent. Inflorescences of simple thyrsi, cymulae of usually geminate spikes, sometimes 3 – 4 ternate, vinaceous. Flowers monoclinous, vinaceous to reddish. Fruit a follicule, straight to very rarely slightly curved, flat-compressed, 5.5 – 6.5 × 1.5 – 2 cm, valves vinaceous to dark-brown (Fig. 2 C). Vernacular names: — Barbatimão-miúdo.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30BA84642BF4F.taxon	distribution	Distribution and habitat: — Stryphnodendron platyspicum samples are known only from the Federal District and neighboring areas in Goiás state in Brazil. The natural habitats of this species are very reduced, mainly due to the urban expansion in Brasília and surroundings. This species is usually found in woody cerrados, but also in more open physiognomies (campo cerrado). Conservation: — Vulnerable (VU B 1 ab (i, iii) + 2 ab (ii, iii) [AOO = 60.000 km 2, EOO = 2,333.839 km 2]. Although some populations of Stryphnodendron platyspicum are restricted to small areas, in situ observations in Brasília revealed that they are usually abundant in individuals. Furthermore, herbarium collections indicate that the species is frequently found in conservation units, such as the Águas Emendadas Biological Reserve and the IBGE Ecological Reserve.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30BA84642BF4F.taxon	description	Phenology: — This species was collected with flowers from August to December and with immature fruits in September, mature fruits collected from November to February.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30BA84642BF4F.taxon	materials_examined	Selected specimens examined: — BRAZIL. Distrito Federal: Brasília, Reserva Ecológica do IBGE, nascente do Ribeirão do Monjolo, 22 December 1994, fl., M. L. Fonseca & E. C. Lopes 139 (IBGE, RB). Brasília, Reserva Ecológica do IBGE, cerrado próximo à confluência do córrego Taquara, 09 January 1992, fr., B. A. S. Pereira 2039 (IBGE, RFA, UEC).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30FB845F9BCCA.taxon	materials_examined	— Type: BRAZIL. Minas Gerais, “ Minas ”, s. d., Martius 1102 (lectotype M 0218780!, designated here, isolectotypes K!, P!, BR!, G!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30FB845F9BCCA.taxon	description	Trees (3.5 –) 4 – 7 m tall. Leaves with (9 –) 11 – 18 pairs of pinnae; 14 – 23 pairs of leaflets; petiolar nectary 1, verruciform; leaflets 3 – 8 (– 11) × 1.5 – 4 mm, usually oblong, distal leaflets sometimes obovate, proximal usually oblong, rarely elliptic to ovate, chartaceous, subconcolor, upper surface sparsely pubescent to pubescent, lower surface usually pubescent, rarely sparsely pubescent, unilateral tuft of trichomes on the lower surface usually absent, sometimes inconspicuous. Inflorescences of simple thyrsi, reddish, pinkish to vinaceous; cymulae of usually solitary, or geminate spikes; spikes 8 – 11 (– 12.5) cm long. Flowers monoclinous, corolla glabrous, atrovinaceous. Fruit a nucoid legume, straight to slightly curved, subturgid to rarely turgid, seeds slightly prominent, valves coriaceous, inconspicuously nerved. Nomenclatural notes: — The only mention of type in the protologue of S. polyphyllum is the plant´s locality. Among the specimens examined in this work, Martius 1102, bearing the label “ Her. Flor. Brasil ” and deposited in M, is the specimen that most represents the protologue.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30FB845F9BCCA.taxon	distribution	Distribution and habitat: — This species occurs in semi-deciduous forests or woody cerrados of the Zona da Mata Mineira in Northwestern Minas Gerais and adjacent areas of Espírito Santo and Bahia states. The specimen registered at the Federal District (Heringer 14824, RB) was grown from seeds collected in Minas Gerais. Conservation: — Least Concern (LC) [AOO = 180.000 km 2, EOO = 283,418.359 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30FB845F9BCCA.taxon	description	Phenology: — This species was collected with flowers from September to June, with immature fruits from March to June and mature fruits concentrated in July and August, with old fruits in September.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FF91FFED39D30FB845F9BCCA.taxon	materials_examined	Selected specimens examined: — BRAZIL. Minas Gerais: Botumirim, São Domingos, encostas do Ribeirão São Domingos, em trilha para o alto da Serra da Canastra, 20 November 2007, fl., R. C. Forzza et al. 4933 (RB, SPF). Santos Dumont, Perobas, Estrada para o Patrimônio dos Paiva, Rio das Perobas, 2 ª cachoeira a montantes, 09 September 2004, fr., R. Mello-Silva 2659 (SPF, NY).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30BA845B3BE16.taxon	description	Trees (11 –) 15 – 40 m tall, trunk usually straight, rarely tortuous; branch nectaries absent. Leaves with 3 – 4 pairs of pinnae, opposite; 4 – 5 pairs of leaflets, opposite; petiolar nectary 1, conical to sometimes round; leaflets 4.5 – 9 (– 12) × 2 – 4 (– 5) cm, apex apiculate to caudate, very rarely acute, margin undulate to repand, usually chartaceous, sometimes subcoriaceous, subconcolor to rarely discolor, glabrous except for the puberulent to subglabrous midrib on both surfaces, unilateral tuft of trichomes on lower surface absent. Sinflorescence a pleiothyrsus; cymulae of solitary, geminate to ternate spikes; spike 2.5 – 4 cm long; spike prophylls late deciduous, 2 – 3 mm long. Flowers monoclinous or diclinous, reddish to rarely yellowish green, anther gland sessile. Fruit a nucoid legume, strongly curved, flatcompressed, slightly constrained between the seeds, 6 – 9 × 1.5 – 1.7 cm, valves subcoriaceous, reddish dark-brown and ferruginous-pulverulent, glabrescent, contorted forming a globose conglomerate. Vernacular names: — Mandi- ’ iran- ’ y (“ false manioc ”), Cuhuba, Tachi-rana Branca, Taxirana (Brazil); Patakou Wana (Paramaka language, French Guiana); Hoogland-laksiri, Hiakantaballi (Surinam); Cobija, Mure, Jödena, Masaguaro (Ye’Kuana language, Venezuela).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30BA845B3BE16.taxon	materials_examined	Nomenclatural notes: — There is a specimen of S. polystachyum in U (U 99421 – B!) whose label shows the same month and collecting site as the holotype, but the collector is indicated as “ Focke ”. Though it is likely that they are duplicates, the protologue does not refer to the collector´s name, and we opted not to consider it a type specimen.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30BA845B3BE16.taxon	distribution	Distribution and habitat: — Stryphnodendron polystachyum is an exclusively Amazonian species, found in terra firme forests, often as an element of the canopy, in the Northeastern Amazon-Atlantic Coast province and Jari-Trombetas province, comprising localities in Amazonas, Pará, Maranhão and Amapá states in Brazil. This species is also found in non-flooded tropical forests and humid montane forests in Guyana, French Guiana, Suriname and Venezuela. Conservation: — Least Concern (LC) [AOO = 52.000 km 2, EOO = 1,191,866.645 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30BA845B3BE16.taxon	description	Phenology: — This species was collected with flowers in April, from July to September, November and December, and with fruits in January and February, May to July and September to November.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30BA845B3BE16.taxon	materials_examined	Selected specimens examined: — BRAZIL. Pará: Jacunda, Rio Tocantins, caminho para o centro, 19 May 1977, fr., M. G. Silva & R. Bahia 3126 (MO, NY). FRENCH GUIANE. Passoura, Région de Kourou, 23 August 1991, fl., D. Sabatier & M. F. Prevost 3758 (CAY, NY, P, U).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30E504435B326.taxon	materials_examined	— Type: EQUADOR. Napo, 1 km N of Coca, 00 ° 25 ’ S, 77 ° 00 ’ W, 15 September 1986, Neill & Palacios 7359 (holotype QCNE 233!, isotypes G!, INPA!, K!, MO!, NY!, RFA!, US!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30E504435B326.taxon	description	Trees 15 – 25 m tall, rhytidome light-gray, smooth. Leaves with 11 – 14 pairs of pinnae; 11 – 19 pairs of leaflets; petiolar nectary 1, verruciform; leaflets 4 – 11 × 2 – 6 mm, usually oblong, distal leaflets usually obovate, proximal usually elliptic, chartaceous, discolor, upper surface glabrous, sometimes with indumentum only at the margin, lower surface pubescent to tomentose, bilateral tuft of trichomes on the lower surface present, usually prolonged up to the middle part of the blade. Inflorescences of simple thyrsi, yellowish; cymulae of solitary to geminate spikes; spikes 8 – 9 cm long. Flowers monoclinous, corolla tube glabrous, lobes densely yellow-pubescent, yellowish. Fruit a nucoid legume, straight to slightly curved, turgid, seeds non-prominent, valves woody, conspicuously nerved.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30E504435B326.taxon	distribution	Distribution and habitat: — Stryphnodendron porcatum is endemic to tropical rainforests of Ecuador, usually in alluvial soil and sometimes in areas subject to flooding. Conservation: — Least Concern (LC) [AOO = 104.000 km 2, EOO = 71,783.492 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30E504435B326.taxon	description	Phenology: — The species was collected with flower buds in September, January and February, with flowers from August to November and in January and with fruits from April to November.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAEFFD239D30E504435B326.taxon	materials_examined	Selected specimens examined: — EQUADOR. Coca, 2 km ao N de Coca, 04 October 1987, fl., D. Neill et al. 7837 (K, MO, NY, US). Reserva Florística El Chuncho, Estación Experimental INIAP – payamino, 5 km al NW de Coca, 15 October 1987, fr., D. Neill et al. 7953 (MO, NY).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAFFFD139D30BA845DABA0A.taxon	description	(Fig. 8)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAFFFD139D30BA845DABA0A.taxon	materials_examined	— Type: BRAZIL. Amazonas, Maraã, Rio Japurá, margem esquerda, Lago Maraã, 29 October 1982, Amaral et al. 232 (holotype INPA 106613!, isotypes K!, MG!, MO!, NY!, UB!, US!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAFFFD139D30BA845DABA0A.taxon	diagnosis	Diagnosis: Stryphnodendron procerum is morphologically related to S. excelsum, but differs by its conical petiolar nectary (vs. verruciform with an elongated base in S. excelsum), 4 – 8 pairs of pinnae (vs. 8 – 11 pairs), 2 – 9 rachillae nectaries (vs. 1 – 3), tuft of trichomes on the lower surface usually absent, inconspicuous when present (vs. present and unilateral), ovary sparsely white-tomentose to white-tomentose, sometimes white-pubescent, rarely glabrous (vs. glabrous), prophylls deciduous (vs. late deciduous).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAFFFD139D30BA845DABA0A.taxon	description	Trees ca. 33 m tall, the branches gray and reddish-brown with scattered white lenticels, lacking extrafloral nectaries, glabrous, ferruginous-pulverulent and yellow-pubescent, glabrescent, more densely towards the apex, the apex densely ferruginous-pulverulent and yellow-pubescent. Leaves with petioles 2.2 – 4 cm long, glabrous to sparsely ferruginouspulverulent, glabrescent, yellow-pubescent to sparsely yellow-pubescent only near the insertion of the proximal pair of pinnae, extrafloral nectary 1, inserted at 0.5 – 1.6 cm from the base of the petiole, 1.5 – 3 × 1 – 1.5 mm, conical; pinnae 4 – 8 pairs, subopposite to opposite, the insertion of each pair spaced in (0.6 –) 1 – 2.3 cm; rachis striate, sparsely ferruginouspulverulent, yellow-pubescent only near the insertion of the pinnae, otherwise glabrescent; extrafloral nectaries 1 – 4, inserted at 1 – 5 mm below the distal pair of pinnae, ca. 1 × 1 mm, conical; stipels deciduous, not seen; 2 nd degree petiolules ca. 1 mm long, the same color as the upper surface of the blade, yellow-pubescent; leaflets (5 –) 7 – 14 pairs, the 2 – 3 proximal pairs of pinnae bearing fewer pairs of leaflets; rachillae sparsely yellow-pubescent to yellow-pubescent, very sparsely ferruginous-pulverulent, glabrescent, extrafloral nectaries 2 – 9, inserted at ca. 1 mm below the distal pair of leaflets, ca. 0.5 × 0.5 mm, verruciform; stipel deciduous, not seen; leaflets usually subopposite, opoosite towards the apex of the rachis, very rarely alternate, blade asymmetrical, usually oblong to oblong-rhombic, sometimes ovate, rarely elliptic (specially athe the proximal pairs of leaflets), the distal pairs usually widely obovate, sometimes obovate, (5 –) 6 – 16 × 4 – 9 mm, apex usually retuse, sometimes rounded, rarely truncate, margin sub-revolute, entire and puberule to pubescent, base asymmetrical, proximal side usually obtuse, sometimes widely rounded, at the distal pairs of leaflets usually acute, distal side narrowly rounded, chartaceous to subcoriaceous, discolor, upper surface nigrescent, glossy, subglabrous to sparsely puberule, lower surface lighter, opaque, subglabrous, sparsely puberule to puberule, unilateral tuft of trichomes on the lower surface of the leaflets usually absent, sometimes inconspicuous, not prolonged, venation brochidodromous, the nerves weakly evident on both surfaces, the midrib sulcate at the upper surface, prominent at the lower surface, the remaining nerves weakly prominent. Inflorescences of simple thyrsi, yellow; cymulae bearing (1 –) 2 – 4 spikes 8 – 14 cm long; bracts deciduous, not seen; peduncle 1 – 2.5 cm long, ferruginous-pulverulent to densely ferruginous-pulverulent, flattened to subcylindrical; rachis sparsely ferruginous-pulverulent and yellow-pubescent to densely yellow-pubescent, subcylindrical, ca. 1 mm thick. Flowers monoclinous and diclinous (only staminate flowers seen), color unknown; calyx campanulate, shortly apiculate, yellow-pubescent, ca. 1 mm long; corolla ca. 2 mm long, tubular, petals fused up to 2 / 3 of its length, glabrous to subglabrous at the tube, the lobes puberule to pubescent, acute, erect; stamens 3 – 5 mm long, anthers ca. 0.5 mm long, nectaries stipitate, conspicuous fold present at the dorsal side of the anthers, approximately the same length of the thecae; ovary sparsely white-tomentose to tomentose-tomentose, sometimes white-pubescent, rarely glabrous, shortly stipitate, stigma porate; prophylls deciduous, ca. 0.5 mm long, shell-shaped, yellow-pubescent. Fruits not seen.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAFFFD139D30BA845DABA0A.taxon	etymology	Etymology: — The epithet of this new species refers to the latin word for “ very tall ”, or “ high ”, in reference to the size of the individuals that were registered in herbarium specimens.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAFFFD139D30BA845DABA0A.taxon	discussion	Remarks: — Stryphnodendron procerum has typically yellow flowers, with indumentum covering calyx and corolla, and as the name suggests, are large-sized trees up to 33 m tall and 2.5 m in diameter. The species is also distinguished by having only 4 – 8 pairs of pinnae, small (0.5 × 0.5 mm) and verruciform extrafloral nectaries at the rachillae, found between almost all pairs of leaflets, whilst the extrafloral nectaries of the rachis are conical. The leaflets usually lack the unilateral tuft of trichomes on the lower surface, or they are inconspicuous when present, and the ovary is usually white-tomentose to sparsely white-tomentose, sometimes white-pubescent (rarely glabrous). S. procerum so far have been treated either as S. microstachyum, or S. guianense, although it does not have the glabrous flowers and cupuliform calyx characteristic of S. guianense, nor the conical extrafloral nectaries at the rachillae that are typical of S. microstachyum. This species belongs to the group of Amazonian multifoliolate taxa with medium-sized leaflets, and the species that are morphologically most similar to S. procerum are S. excelsum and S. conicum, which can be distinguished by the features listed on table 5. According to the holotype’s label (I. L. Amaral et al. 232), this species has a white and heavy wood, and the label in L. C. Procópio et al. 275 mentions that the tree exudates a sticky, honey-colored resin when cut.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAFFFD139D30BA845DABA0A.taxon	distribution	Distribution and habitat: — Stryphnodendron procerum has a very restricted distribution in the Amazon region, known only in tropical rainforest areas of the Northwest Sector phytogeographic province, in periodically flooded areas. There are two registers of this new taxon collected in a legal protection area (Reserva de Desenvolvimento Sustentável Mamirauá), and although the labels of the specimens refer their occurrence in Manaus, this conservation unit is located between the Japurá, Solimões and Auti-Paraná rivers in Western Amazon instead. Conservation: — Endangered (EN B 2 ab (ii, iii )) [AOO = 8.000 km 2, EOO not measurable]. The new species is known from only three records from two different locations, and although it occurs in a very restricted area, there are registers of S. procerum in legally protected areas (Mamirauá Sustainable Development Reserve), which is a favorable factor for its conservation.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAFFFD139D30BA845DABA0A.taxon	biology_ecology	Phenology: — The species was collected with flowers in October and fruits in May.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFAFFFD139D30BA845DABA0A.taxon	materials_examined	Additional specimens examined (paratypes): — BRAZIL. Amazonas: Manaus, Reserva de Desenvolvimento Sustentável de Mamirauá, 09 October 2000, fl., J. M. Brito 139 (INPA, UB). Manaus, Estação Ecológica de Mamirauá, 06 May 2000, fr., L. C. Procópio et al. 275 (INPA, UB).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFABFFD739D30BA84523BCB3.taxon	description	Trees (5 –) 8 – 23 (– 25) m tall, trunk usually straight. Leaves with (9 –) 11 – 16 (– 18) pairs of pinnae; (8 –) 15 – 28 (– 32) pairs of leaflets; petiolar nectary 1, verruciform to verruciform with an elongated base; leaflets 3 – 9 × 1 – 3 mm, usually narrowly oblong, sometimes narrowly elliptic to lanceolate, distal leaflets usually obovate, proximal usually elliptic, chartaceous, subconcolor to discolor, upper surface usually sparsely puberule, sometimes puberule to sparsely pubescent, very rarely glabrous, lower surface usually puberule to pubescent, sometimes villous, rarely glabrous and then the midrib puberule, unilateral tuft of trichomes on the lower surface usually inconspicuous, sometimes absent. Inflorescences of simple thyrsi, yellowish, greenish yellow to whitish yellow; cymulae of geminate to 4 - ternate spikes; spikes 9.5 – 14 cm long. Flowers usually monoclinous, rarely diclinous, corolla tube sparsely pubescent, lobes yellowpubescent, yellowish to light-yellow, rarely white. Fruit a nucoid legume, straight, subturgid, seeds slightly prominent, valves subcoriaceous, inconspicuously nerved (Fig. 1 A). Vernacular names: — Baginha, Baguinha, Baginha-de-São-João (Brazil, Acre), Favinha (Brazil, Alagoas, Paraíba, Pernambuco), Paricá (Brazil, Amapá), Cobi, Caubi, Juerana, Juerana-branca, Muanza, Munzê, Tamba-empé, Taimbapé, Tambaipé, Tamanqueira (Brazil, Bahia), Barbatimão (Brazil, Bahia, Pará), Camuzé, Fava, Timbaúba, Timbó-da-mata (Brazil, Amazonas), Timborana (Brazil, Pará), Paricarana (Brazil, Amazonas, Pará), Fava-Brabatimão (Brazil, Mato Grosso); Hediodillo (Bolivia); Pashaco (Peru); Kwattakamma, Pikin-misiki (Suriname); Arekuna, Abarkayakán, Brusquillo, Uramayudek (Venezuela). Nomenclatural notes: — A lectotype was selected among the three syntypes indicated by Bentham (1841) for S. floribundum. This same author (1875) published S. angustum citing on the protologue only the collection site (“ near Barra do rio Negro ”), and in Flora brasiliensis, published in the following year, he referred Martius as the collector of the sample. The type corresponds to Martius 2578 (2758?), for which we found four duplicates in M, requiring the lectotypification performed here. Our searches found several duplicates of the type referred by Sagot (1882) to Stryphnodendron melinolis, the specimen in P that was indicated as lectotype is here formally indicated as such.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFABFFD739D30BA84523BCB3.taxon	discussion	We were unable to locate any type specimens of Piptadenia foliolosa in Betham´s workplace, and for this reason we indicate as lectotype the material deposited in F.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFABFFD739D30BA84523BCB3.taxon	distribution	Distribution and habitat: — Stryphnodendron pulcherrimum is the most widely distributed species of the genus, mostly occurring in areas of terra firme forest of the Amazon in Brazil (Acre, Amapá, Amazonas, Mato Grosso, Pará, Roraima and Rondônia states), French Guiana, Suriname, Guyana, Venezuela, Colombia, Peru and Bolivia. This species is less frequently registered in areas of igapó forest and rarely in campina areas in the upper Negro River. S. pulcherrimum is also disjunctly found in areas of restingas, dry forests and Atlantic forest in Northeastern Brazil (Alagoas, Bahia, Maranhão, Paraíba, Pernambuco and Sergipe states). Conservation: — Least Concern (LC) [AOO = 560.000 km 2, EOO = 8,023,534.535 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFABFFD739D30BA84523BCB3.taxon	description	Phenology: — Flowering and fruiting samples of this species were collected throughout the year.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFABFFD739D30BA84523BCB3.taxon	materials_examined	Selected specimens examined: — BRAZIL Pará: Rio Trombetas, Cachoeira Porteira, próximo a foz do Rio Mapuera, 18 June 1980, fr., G. Martinelli 7047 (NY, RB). Almeirim, Monte Dourado, estrada de Pedral, 12 November 1978, fl., M. R. Santos 290 (INPA).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFD439D30BA8422CBF12.taxon	description	Trees (5 –) 10 – 25 (– 35) m tall, trunk grayish; branch nectaries absent. Leaves with 2 (– 3) pairs of pinnae, opposite; 2 – 4 pairs of leaflets, opposite; petiolar nectary 1, verruciform; leaflets (6 –) 7 – 10.5 (– 13) × (2 –) 2.8 – 5.5 (– 7) cm, apex apiculate to usually caudate, margin flat, coriaceous to subcoriaceous, concolor, glabrous on both surfaces, unilateral tuft of trichomes on lower surface absent. Sinflorescence a diplothyrsus; cymulae of solitary, geminate to ternate spikes; spike (5 –) 9 – 10 cm long; spike prophylls late deciduous to persistent, 2 – 3 mm long. Flowers monoclinous, whitish, greenish yellow to yellowish, anther gland sessile. Fruit a nucoid legume, straight to usually slightly curved, subturgid, 6.5 – 16 × 1.6 – 2.6 cm, valves subcoriaceous to coriaceous, light-brown to reddish dark-brown and ferruginouspulverulent, glabrescent (Fig. 1 B). Vernacular names: — Ingarana.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFD439D30BA8422CBF12.taxon	distribution	Distribution and habitat: — This species occurs in terra firme forests, mostly in non-flooded vertente forests (on a hill landscape, with clay soils in the highest parts and sandy soils in the lowest parts) or in baixio forests, generally associated with sandy soils with accumulation of sediments in the alluvial plains along of the igarapés. The current distribution of Stryphnodendron racemiferum is restricted to the Brazilian territory, in the phytogeographic provinces of Roraima, Manaus and Jari-Trombetas (Roraima, Amazonas and Pará states), all in the Central-Eastern Amazon. The specimens registered in Rio de Janeiro (Rio de Janeiro state) are cultivated trees at the Brazilian Agricultural Research Corporation (EMBRAPA) for studies of nodulation, grown from seeds collected in Porto Trombetas / PA. Conservation: — Near Threatened (NT) [AOO = 32.000 km 2, EOO = 27,268.978 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFD439D30BA8422CBF12.taxon	description	Phenology: — This species was collected with flowers from June to January (except July and September), specimens with fruits were collected from July to March (except September, October, and December).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFD439D30BA8422CBF12.taxon	materials_examined	Selected specimens examined: — BRAZIL. Amazonas: Manaus-Itacoatiara Highway, Reserva Florestal Ducke. Km 26. Mata on terra firme, 21 November 1966, fl., G. T. Prance et al. 3613 (F, INPA, NY, R, US). Manaus, Estrada Manaus-Itacoatiara, km 200, 30 July 1968, fr., W. Rodrigues et al. s. n., INPA 21328, NY, RFA 29759).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFDA39D30F5C46BBBF13.taxon	materials_examined	— Type: BRAZIL. Amazonas, Rio Solimões, ca. 1 km ao sul da Vila Careiro, 23 August 1973, C. C. Berg et al. 19711 (holotype INPA 43195!, isotypes F!, K!, MG!, MO!, NY!, R!, RFA!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFDA39D30F5C46BBBF13.taxon	diagnosis	Diagnosis: Stryphnodendron riparium is similar to S. guianense, differing by its conical petiolar nectaries (vs. verruciform in S. guianense), leaves with 4 – 7 pairs of pinnae (vs. 8 - 11 pairs), spikes 6.5 – 7 cm long (vs. 8 – 18.5 cm long), yellow flowers (vs. pinkish), tubular corolla (vs. campanulate) and ovary usually white-tomentose, sometimes sparsely white-tomentose (vs. glabrous to white pulverulent, glabrescent).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFDA39D30F5C46BBBF13.taxon	description	Trees 10 – 12 m tall, branches lenticelate, lacking extrafloral nectaries, sparsely ferruginous-pulverulent, glabrescent, densely ferruginous-pulverulent at the apex. Leaves with petioles 3.5 – 7.5 cm long, sparsely ferruginouspulverulent, glabrescent, very sparsely yellow-pubescent only near the insertion of the proximal pair of pinnae, extrafloral nectary 1, inserted at 1.5 – 2 cm from the base of the petiole, ca. 2 × 1 – 1.5 mm, conical; pinnae 4 – 7 pairs, subopposite to opposite, the insertion of each pair spaced in 1.6 – 2.4 cm (or less, between the distal pair of pinnae); rachis striate, sparsely ferruginous-pulverulent and yellow-pubescent, glabrescent; extrafloral nectaries 1 – 3, inserted 0.5 – 3 mm below the distal pair of pinnae, ca. 1 × 0.5 mm, verruciform to verruciform with an elongated base; stipels deciduous, not seen; petiolules of 2 nd degree ca. 1 mm long, the same color as the upper surface of the blade, yellowpubescent; leaflets 5 – 10 pairs, the proximal pair of pinnae bearing fewer leaflets; rachillae yellow-pubescent and very sparsely ferruginous-pulverulent, glabrescent, extrafloral nectaries 2 – 9, inserted at ca. 1 mm below the distal pair of leaflets (usually only the 1 – 3 proximal pairs of leaflets lack extrafloral nectaries), ca. 0.5 × 0.5 mm, verruciform; stipel deciduous, not seen; leaflets usually subopposite, opposite towards the apex of the rachis, very rarely alternate, blade asymmetrical, usually oblong-rhombic to oblong, sometimes ovate, rarely elliptic (especially the proximal pairs of leaflets), the distal pairs usually widely obovate, sometimes obovate, (7 –) 10 – 21 (– 25) × (5 –) 6 – 13 mm, apex usually rounded to retuse, rarely truncate, sometimes emarginate at the distal pairs, margin sub-revolute, entire and pubescent, base asymmetrical, the proximal side usually obtuse, sometimes widely rounded, usually acute at the distal pairs, distal side usually acute, sometimes narrowly rounded, chartaceous, discolor, upper surface dark, glossy, subglabrous, lower surface lighter, opaque, usually subglabrous, sometimes sparsely puberule, unilateral tuft of trichomes on the lower surface of the leaflets present, usually prolonged up to the 3 rd pair of secondary nerves, venation brochidodromous, the nerves weakly evident, only the midrib sulcate, the remaining nerves weakly prominent at the upper surface, evident and prominent at the lower surface. Inflorescences of simple thyrsi, whitish-yellow; cymulae of solitary to ternate spikes, spikes 6.5 – 7 cm long; bracts deciduous, not seen; peduncle 0.5 – 1.2 cm long, densely ferruginous-pulverulent, glabrescent, cylindrical; rachis nigrescent covered by a yellow-pubescent indumentum, cylindrical, ca. 1 mm thick. Flowers monoclinous and diclinous (only staminate seen), yellow; calyx tubular, apiculate, yellow-pubescent, ciliate, ca. 1 mm long; corolla ca. 2.5 mm long, tubular, petals fused up to 2 / 3 of its length, glabrous to subglabrous at the tube, the lobes puberule, acute, erect; stamens 3.5 – 4 mm long, anthers ca. 0.5 mm long, nectaries stipitate, conspicuous fold present at the dorsal side of the anthers, approximately the same size as the thecae; ovary usually white-tomentose, sometimes sparsely white-tomentose, shortly stipitate, stigma porate; prophylls deciduous, ca. 0.5 mm long, shellshaped, yellow-pubescent. Fruit a sessile nucoid legume, straight to slightly curved, flat-compressed with slightly prominent seeds, 5 – 8 × 1.2 – 1.5 cm, valves coriaceous, reddish-brown, ferruginous-pulverulent, glabrescent. Seeds 5 – 7, not seen.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFDA39D30F5C46BBBF13.taxon	etymology	Etymology: — The epithet refers to the habitat in which the species grows in areas seasonally subject to the rivers´ floods.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFDA39D30F5C46BBBF13.taxon	discussion	Remarks: — The name Stryphnodendron inaequale is based on an identification with Bentham’s handwriting on the label of the sample Riedel 543 at K. Though there is no known published description for this name, this author synonymized S. inaequale under S. microstachyum (Bentham 1875, 1876), which led to a series of mistakes concerning the names applied to several Amazonian taxa morphologically similar to this species. A detailed analysis of the material named as S. inaequale showed that Riedel’s collection shows distinct features from the type of S. microstachyum, namely indumentum at calyx and corolla and the rachillae bearing extrafloral nectaries between almost all pairs of leaflets, among other details that led to the recognition of a distinct species S. riparium. This is yet another species belonging to the group of Amazonian multifoliolate taxa with medium-sized leaflets, whose diagnostic characters are listed on Table 5.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFDA39D30F5C46BBBF13.taxon	distribution	Distribution and habitat: — This species is restricted to the Xingu-Madeira phytogeographic province, in periodically flooded forests near igarapés or dark water floodplains, or in graminous fields along the Solimões river. The height of the individuals is often described on the herbarium labels as “ meters above water ”, indicating that it is most commonly found in flooded areas. Conservation: — Least Concern (LC) [AOO = 32.000 km 2, EOO = 188,840.452 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFDA39D30F5C46BBBF13.taxon	description	Phenology: — Specimens of this taxon were collected with flowers in August and September, with fruits in June (young fruits) and July	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA8FFDA39D30F5C46BBBF13.taxon	materials_examined	Additional specimens examined (paratypes): — BRAZIL. Amazonas: Borba, Rio Madeira, s. d., fl., Riedel 543 (K). Careiro, Ilha da Marchantaria, Rio Amazonas, 13 July 1999, fr., M. A. D Souza et al. 614 (INPA). Humaitá, Rio Madeira, 23 June 1936, fl., A. Ducke s. n. (RB 35524). Manacapuru, Lago do Calado, beira do lago, 16 April 1986, im. fr., F. M. Magalhães 292 (INPA). Autaz Mirim, Rosa Branca, 13 June 1973, fl., A. Loureiro et al. s. n. (INPA 38837). Paraná do Autaz Mirim, 21 April 1966, im. fr., W. Rodrigues & F. Mello 7777 (RFA). Paraná do Autaz Mirim, Lago do Caioe, 26 August 1973, fl., C. C. Berg et al. 19763 (INPA, K, MO, NY, US). Rio Solimões, Lago de Manacapuru (água preta), 08 October 1972, fl., O. Pires 219 (RFA). Pará: Almeirim, margem do Paraná do Amazonas, 4 September 1918, fl., A. Ducke 17295 (R).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA6FFDB39D30F5C459CBA0B.taxon	description	Treelets to trees (2 –) 6 – 20 m tall. Leaves with (9 –) 10 – 13 pairs of pinnae; (6 –) 10 – 19 pairs of leaflets; petiolar nectary 1, verruciform with an elongated base; leaflets (4 –) 7 – 9 (– 11) × 3 – 5 mm, usually oblong-rhombic to oblong, distal leaflets usually obovate, proximal usually elliptic, chartaceous, discolor, upper surface usually glabrous to subglabrous, lower surface pubescent sometimes puberule, unilateral tuft of trichomes on the lower surface present. Inflorescences of simple thyrsi, vinaceous to reddish; cymulae of solitary to 4 - ternate spikes; spikes (6 –) 8 – 11.5 (– 13.5) cm long. Flowers usually monoclinous, sometimes diclinous, corolla tube glabrous, puberule at the apex of the lobes, pinkish. Fruit a nucoid legume, straight to slightly curved, turgid, seeds non-prominent, valves coriaceous, inconspicuously nerved (Fig. 1 G). Vernacular names: — Paricarana, Tapiririca, Faveira-camuzé, Camuzé, Fava (Brazil, Amazonas).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA6FFDB39D30F5C459CBA0B.taxon	materials_examined	Nomenclatural note: — The name Stryphnodendron roseiflorum is based on three syntypes and was later lectotypified with a specimen deposited at RB. However, this gathering is currently mounted on two separate sheets under the same register number (RB 10406), and the lectotype indicated by Martins (1981) corresponds to the one identified by the barcode number 00540075.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA6FFDB39D30F5C459CBA0B.taxon	distribution	Distribution and habitat: — This species occurs predominantly in the Coastal Atlantic, Manaus and Xingu-Madeira provinces of Central-Eastern Amazon, in campos, campinarana or open secondary areas (capoeiras), either in flooded or non-flooded areas and usually associated with sandy soils. A few individuals were disjunctly collected in areas of higher altitudes in Central Brazil, also in more open physiognomies with shallow and generally sandy soils of Minas Gerais state. Conservation: — Least Concern (LC) [AOO = 40.000 km 2, EOO = 2,675,704.791 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA6FFDB39D30F5C459CBA0B.taxon	description	Phenology: — Flowering specimens were collected from May to November and in January and March, fruiting specimens from March to June.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA6FFDB39D30F5C459CBA0B.taxon	materials_examined	Selected specimens examined: — BRAZIL. Distrito Agropecuário, Fazenda Dimona, ca. 72 km N of Manaus, 50 - 125 m, 02 ° 19 ’ S, 60 ° 05 ’ W, 02 November 1988, fl., M. Pacheco et al. 22 (INPA, K, NY, U, US). Manaus, Reserva Florestal Ducke, Manaus-Itacoatiara km 26, bosque do lado direito da estrada, depois do igarapé, 03 June 1964, fr., W. Rodrigues & A. Loureiro 5836 (INPA, RFA, US).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA7FFDB39D30A7A4285BF43.taxon	materials_examined	— Type: BRAZIL. Piauí, “ Oeiras, Prov. Piauhy ”, s. d., Martius s. n. (holotype M 0218772!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA7FFDB39D30A7A4285BF43.taxon	description	Trees or very rarely shrubs (0.5 –) 2 – 6 (– 9) m tall. Leaves with (5 –) 6 – 13 (– 15) pairs of pinnae; (4 –) 5 - 12 (– 14) pairs of leaflets; petiolar nectary 1, verruciform with an elongated base; leaflets (4 –) 7 – 18 (– 22) × (4 –) 6 – 13 (– 17) cm, usually orbicular, ovate, elliptic or elliptic-ovate, the distal ones usually obovate to sometimes widely obovate, chartaceous sometimes membranaceous-chartaceous or chartaceous-coriaceous, discolor, unilateral tuft of trichomes on the lower surface present, usually prolonged at the midrib. Inflorescences of simple thyrsi, whitish to yellowish, rarely lilac to purplish; cymulae of solitary to 4 - ternate spikes; spikes 9 – 18 cm long. Flowers monoclinous, rarely diclinous, corolla glabrous, white, yellowish white to greenish white. Fruit a nucoid legume, usually straight, rarely slightly curved, turgid, seeds slightly prominent to rarely prominent, valves coriaceous to woody, inconspicuously nerved.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA7FFD839D30FA247FFB90E.taxon	description	Fig. 1 E. Vernacular name: — Barbatimão, Fava-de-galheiro (Brazil, Maranhão).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA7FFD839D30FA247FFB90E.taxon	discussion	Nomenclatural notes: — Bentham (1875) refers to two syntypes for S. obovatum indicating only the collection sites, which corresponds to Burchell 8343 and Pohl s. n. (Goiás) and Weddel s. n. (Mato Grosso) in his following work (Bentham 1876). Burchell 8343 deposited in K is here selected as lectotype. Although the protologues of S. discolor and S. rotundifolium fo. retusa cited only one collection as their types, our searches revealed several duplicates of each of them, requiring the lectotypifications performed here.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA7FFD839D30FA247FFB90E.taxon	distribution	Distribution and habitat: — Among the Central Brazilian species of Stryphnodendron, S. rotundifolium shows the widest geographical distribution, mostly occurring in drier areas with high luminosity and generally on sandy soils. It grows predominantly in areas of cerrado, campo cerrado, campo limpo and cerradão in Central-Western and Southeastern Brazil (Mato Grosso, Mato Grosso do Sul, Goiás, Tocantins, São Paulo, Minas Gerais and Paraná states), and adjacent areas of Paraguay and Bolivia. It is also observed in the transition region between the Cerrado and Caatinga domains, from the northernmost part of Minas Gerais towards Northeastern Brazil (Maranhão, Piauí, Ceará and Bahia states), where the populations are in most cases associated with high altitude areas, such as Serras and Chapadas. Specimens were also collected in campinaranas of Northern Brazil (Amazonas and Pará states). The only register of the species in Southern Brazil refers to a cultivated tree grown from seeds collected in “ north of Brazil ”, this meaning, according to local Southern concept, any state north of Paraná state. Likewise, all herbarium records of this species from the east coast of Africa are also explicitly indicated as being cultivated. The occurrence of S. rotundifolium in Rio de Janeiro (Glaziou 10611 at K) is unlikely, most probably being a mislabeling of samples collected in São Gonçalo do Rio Preto, Minas Gerais, as indicated in its duplicate at P. Conservation: — Least Concern (LC) [AOO = 600.000 km 2, EOO = 4,953,431.253 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA7FFD839D30FA247FFB90E.taxon	description	Phenology: — This taxon was collected with flowers and fruits throughout the year, except in June and August (flowers) and February (fruits).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA7FFD839D30FA247FFB90E.taxon	materials_examined	Selected specimens examined: — BRAZIL. Bahia: Lençóis, BR- 242, entroncamento Lençóis-Seabra km 6, 12 ° 28´S, 41 ° 24´W, 600 m, 6 October 1995, fr., G. P. Silva & M. Way 3078 (CEN, ESA, HUEFS, TEPB, UEC). São Paulo: Itirapina, Estação Experimental, 16 December 1989, fl., L. Capellari Jr. & B. Appezzato s. n. (ESA 5207, HUEM 6162).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFD839D309784672BE8B.taxon	description	Fig. 1 F. Vernacular name: — Barbatimão-de-folha-miúda, Barbatimão (Brazil, Goiás). Nomenclatural notes: — Stryphnodendron polyphyllum var. villosum was described by Bentham (1876) based on two syntypes, Weddel 2936 and Burchell 5600. The latter specimen was selected as lectotype.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFD839D309784672BE8B.taxon	distribution	Distribution and habitat: — Stryphnodendron rotundifolium var. villosum is widely distributed in Central Brazil, where it occurs mainly in cerrados sensu stricto of Goiás, Federal District, Bahia, Maranhão, Mato Grosso and Mato Grosso do Sul states. This taxon is less frequently found in cerradão, campos and rarely in campos rupestres of Central Brazil. The registers of this species in São Paulo state are all cultivated plants. Conservation: — Least Concern (LC) [AOO = 172.000 km 2, EOO = 1,222,428.394 km 2].	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFD839D309784672BE8B.taxon	biology_ecology	Phenology: — S. rotundifolium var. villosum was collected with flowers throughout the year (except March, June and September) and with fruits from April to November (except October).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFD839D309784672BE8B.taxon	materials_examined	Selected specimens examined: — BRAZIL. Goiás: Caldas Novas, beira de estrada próximo à torre número 220, 17 ° 57´14 ” S, 48 ° 32´50 ” W, 540 m, 27 August 1997, fr., H. G. P. Santos et al. 497 (CEN, HUEFS). Colinas do Sul, beira de estrada em terra perturbada, clareira na beira da mata, 11 December 1991, fl, L. B. Bianchetti & G. Pereira-Silva 1223 (CEN, ESA).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFDE39D30EE44223B96B.taxon	materials_examined	— Type: BRAZIL. Minas Gerais, Unaí, fragmento de cerradão no km 11 da rodovia Unaí / Paracatú, elev. 650 m, 16 ° 15 ’ S, 46 ° 45 ’ W, 22 October 1995, Pereira & Alvarenga 2943 (holotype IBGE 36575!, isotypes CEN!, NY!, RB!, RFA!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFDE39D30EE44223B96B.taxon	diagnosis	Diagnosis: Stryphnodendron velutinum is similar to S. adstringens, but it has velutinous petioles (vs. glabrous to very sparsely pubescent in S. adstringens); fusiform, usually immersed, sometimes slightly prominent petiolar nectary (vs. verruciform with an elongated base), 2 – 4 rachillae nectaries (vs. 1), blades puberule-velutinous on both surfaces, more densely at the lower surface (vs. glabrous), glabrous to white-pulverulent ovary, glabrescent (vs. glabrous), prophylls late deciduous, densely yellow-tomentose and ferruginous-pulverulent (vs. deciduous and tomentose) and flat-compressed fruits (vs. turgid).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFDE39D30EE44223B96B.taxon	description	Trees 4 – 5 m tall, the branches erect, lenticellate, lacking extrafloral nectaries, velutinous, glabrescent, yellowvelutinous at the apex. Leaves with petioles 6.5 – 8.5 cm long, velutinous, extrafloral nectary 1, inserted at 0.3 – 0.7 cm from the base of the petiole, 3 – 4 × 0 – 0.5 mm, fusiform, usually immersed, sometimes slightly prominent, darkened; pinnae 5 – 6 pairs, subopposite to opposite, the insertion of each pair spaced in 2 – 3 cm; rachis striate, velutinous; extrafloral nectaries 1 – 2, inserted at (1 –) 3 – 5 mm below the distal pairs of pinnae, 1 – 2 × 0 – 0.5 mm, usually fusiform with the central part circular e slightly elevated, sometimes rounded, darkened; stipels deciduous, not seen; 2 nd degree petiolules 0.2 – 0.3 mm long, color not evident, densely yellow-velutinous; leaflets 5 – 7 pairs, the proximal and distal pairs of pinnae bearing fewer pinnula; rachillae velutinous, extrafloral nectaries 2 – 4, inserted 0.5 – 2 mm below the distal pair of leaflets, (0.5 –) 1 × 0.2 – 0.5 mm, verruciform to fusiform, darkened; stipel deciduous, not seen; leaflets usually alternate, subopposite only at the distal pair of leaflets, blade slightly asymmetrical, usually orbicular, sometimes widely elliptic to ovate, distal leaflets usually obovate, (11 –) 20 – 26 × (11 –) 16 – 24 mm, apex usually asymmetrical, emarginate, rarely retuse, margin sub-revolute, entire and velutinous, base asymmetrical, the proximal side usually truncate, sometimes widely rounded, distal side usually rounded, the proximal side acute and distal side rounded at the distal pairs of leaflets, membrano-chartaceous, subconcolor, upper surface slightly darker, puberule-velutinous, lower surface lighter, densely puberule-velutinous, opaque on both surfaces, unilateral tuft of trichomes on the lower surface of the leaflets present, usually prolonged up to the 2 nd or 3 rd pair of secondary nerves, venation brochidodromous, the nerves clearly evident and weakly prominent at the upper surface, evident and prominent at the lower surface. Inflorescences of simple thyrsi, whitish; cymulae of solitary to geminate spikes, spikes 9.5 – 14 cm long; bracts deciduous, not seen; peduncle 1 – 2.5 cm long, ferruginous-pulverulent and velutinous, subcylindrical; rachis densely yellow-velutinous, very sparsely ferruginous-pulverulent, cylindrical, ca. 2 mm thick. Flowers monoclinous, color unknown; calyx campanulate, apiculate, glabrous to rarely subglabrous, ciliate only at the apex of the lobes, ca. 1.5 mm long; corolla 4 – 4.5 mm long, tubular-campanulate, fused up to 1 / 2 of its length, glabrous, lobes acute, erect; stamens 8 – 9 mm long, anthers ca. 0.8 mm long, nectaries stipitate, conspicuous fold present at the dorsal side of the anthers, only above the insertion of the filament; ovary shortly stipitate, glabrous to white-pulverulent, glabrescent, stigma porate; prophylls deciduous, ca. 1 mm long, shell-shaped, densely yellow-tomentose and ferruginous-pulverulent. Fruit a sessile nucoid legume, straight to slightly curved, apex acute to rounded, base attenuate, flat-compressed, seeds slightly prominent, 7 – 9 × 1.3 – 1.7 cm, valves coriaceous, dark brown, reddish, ferruginous-pulverulent, glabrescent. Seeds 6 – 8, not seen.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFDE39D30EE44223B96B.taxon	etymology	Etymology: — The epithet of this new species refers to the very characteristic indumentum that covers the vegetative parts of the plant.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFDE39D30EE44223B96B.taxon	discussion	Remarks: — Stryphnodendron velutinum is most similar to S. adstringens in respect to vegetative (number of pairs of pinnae and leaflets and shape) and also reproductive characters (flower color, size of spikes and congested aspect of the inflorescences, stamen size), but shows some unique features that support its recognition as a separate taxon, listed on table 6. This new species also shows the fusiform petiolar extrafloral nectaries that are usually immersed to sometimes slightly prominent and darkened, as seen in S. holosericeum, but the leaves have fewer pairs of pinnae and leaflets, besides being mostly larger and velutinous on both surfaces.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFDE39D30EE44223B96B.taxon	distribution	Distribution and habitat: — This new species is only known from a very small area in Northeastern Minas Gerais, with a few registers collected in “ degraded cerrado ” or “ cerradão ” on the roadside near the municipality of Unaí, just a few kilometers from the limits with Goiás state. Stryphnodendron velutinum grows on sandy soils, as observed in situ. Conservation: — Endangered (CR B 1 ab (i, iii) + 2 ab (ii, iii) [AOO = 8.000 km 2, EOO = 83.263 km 2]. Recent visits to the area indicated that the individuals of this species are very sparse and the populations are subject to intense anthropogenic pressure, as suggested from herbarium collections.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFDE39D30EE44223B96B.taxon	biology_ecology	Phenology: — Stryphnodendron velutinum was collected with flowers in October and with fruits in February.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA4FFDE39D30EE44223B96B.taxon	materials_examined	Additional specimens examined (paratypes): — BRAZIL. Minas Gerais: Unaí, lado esquerdo do Trevo Unaí / Bonfinópolis / Garapuava, 06 October 1994, fl., B. A. S. Pereira & D. Alvarenga 2659 (CEN, IBGE, NY, RB). Unaí, Fz. Guará, July 2003, sterile, A. Menezes Jr. s. n. (RB 388697). Unaí, margem direita da rodovia MG 188 (Unaí-Paracatu), ca. 7.3 km da cidade, 16 ° 26 ’ 07.7 ” S, 46 ° 53 ’ 10.3 ” W, 03 February 2005, fr., V. R. Scalon et al. 719 (ESA).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA3FFDD39D30BA8448FBAF7.taxon	materials_examined	— Type: BOLÍVIA. Santa Cruz: Ichilo, Reserva Florestal Choré, Rio Ibabo, Bosque Experimental “ Elias Meneces ”, 180 m, 16 ° 35 ’ S, 64 ° 31 ’ W, 16 - 18 August 1990, fr., D. Neill & R. Quevedo 9361 (holotype MO 3807891!, isotypes G!, NY!, U!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA3FFDD39D30BA8448FBAF7.taxon	diagnosis	Diagnosis: Stryphnodendron venosum resembles S. porcatum, but differs by the petiolar nectaries verruciform with an elongated base, 3 – 5 × 1.5 – 2 mm (vs. verruciform, 1 × 1 – 1.5 mm in S. porcatum), 6 – 9 pairs of pinnae (vs. 11 – 14 pairs), rachis sparsely ferruginous-pulverulent, glabrescent (vs. yellow-velutinous), leaflets (11 –) 13 – 24 × (6 –) 7 – 19 mm (vs. 4 – 11 × 2 – 6 mm) and the unilateral tuft of trichomes on the lower surface, not prolonged (vs. bilateral, usually prolonged up to half the blade).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA3FFDD39D30BA8448FBAF7.taxon	description	Trees 10 – 18 m tall, the branches lenticellate, lacking extrafloral nectaries, glabrous to subglabrous, ferruginouspulverulent, glabrescent, densely ferruginous-pulverulent at the apex. Leaves with petioles 4.5 – 5 cm long, glabrous to sparsely ferruginous-pulverulent, glabrescent, extrafloral nectary 1, inserted at 1 – 1.5 cm from the base of the petiole, 3 – 5 × 1.5 – 2 mm, verruciform with an elongated base; pinnae 6 – 9 pairs, subopposite to opposite, the insertion of each pair spaced in 1.2 – 2.2 cm; rachis striate, sparsely ferruginous-pulverulent, glabrescent; extrafloral nectaries 2 – 3, inserted at 1 – 3 mm below the distal pair of pinnae, ca. 0.5 × 0.5 mm, verruciform; stipels deciduous, not seen; 2 nd degree petiolules ca. 1 mm long, the same color as the upper surface of the blade, puberule; leaflets (6 –) 8 – 10 pairs; rachillae very sparsely ferruginous-pulverulent, glabrescent, extrafloral nectaries 3 – 8, inserted at ca. 1 mm below the distal pair of leaflets, ca. 0.3 × 0.3 mm, verruciform; stipel deciduous, not seen; leaflets usually subopposite, opposite towards the apex of the rachis, very rarely alternate, blade asymmetrical, usually oblong-rhombic, sometimes ovalate, rarely elliptic (especially the proximal pairs of leaflets), the distal pairs usually widely obovate to sometimes obovate, (11 –) 13 – 24 × (6 –) 7 – 19 mm, apex usually retuse, sometimes widely rounded, rarely truncate, margin sub-revolute, entire and puberule, base asymmetrical, the proximal side usually obtuse, sometimes truncate, rarely widely rounded, the distal pairs usually acute, distal side narrowly rounded, chartaceous to subcoriaceous, discolor, upper surface nigrescent, sparsely puberule, lower surface lighter, puberule, opaque on both surfaces, unilateral tuft of trichomes on the lower surface of the leaflets present, not prolonged, venation brochidodromous, the nerves weakly evident on both surfaces, the midrib sulcate at the upper surface, prominent at the lower surface, the remaining nerves weakly prominent at the lower surface. Inflorescences of simple thyrsi, color unknown; cymulae not seen; peduncle 1.4 – 2.5 cm long, densely ferruginous-pulverulent, subcylindrical; floral rachis not seen. Flowers not seen; prophylls early deciduous or deciduous, not seen. Fruit a sessile nucoid legume, curved, apex acute, apiculate, base acute to attenuate, flat-compressed, seeds not prominent and evident, the edges thick, 5.4 – 8.5 × 1.4 – 2.5 cm, valves subcoriaceous to coriaceous, dark brown, reddish, ferruginous-pulverulent, glabrescent, conspicuously nerved. Seeds not seen. Vernacular name: — Crespito, Koshi (Mosetén, Bolivia).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA3FFDD39D30BA8448FBAF7.taxon	etymology	Etymology: — The epithet refers to the conspicuously nerved valves of the fruits.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA3FFDD39D30BA8448FBAF7.taxon	discussion	Remarks: — Among the consulted collections only two specimens could be recognized as Stryphnodendron venosum. Though none of them has flowers as to allow the description of reproductive characteristics, it is still possible to confirm that the Bolivian samples represent a new taxon based on unique features in relation to the morphologically most similar species, S. porcatum, which is only found in Ecuador and differs from the new species by the features listed on table 7.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA3FFDD39D30BA8448FBAF7.taxon	distribution	Distribution and habitat: — This taxon is only registered in humid forests of Central Bolivia, frequently in flooded areas. Conservation: — Data Deficient (DD) [AOO = 4.000 km 2, EOO not measurable]. The new species is only known from three locations, and although one of them is known to be a conservation unit, we have no information as to the threats in the remaining distribution area.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA3FFDD39D30BA8448FBAF7.taxon	description	Phenology: — Flowering materials collected in January, fruiting materials in August.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA3FFDD39D30BA8448FBAF7.taxon	materials_examined	Additional specimens examined (paratypes): — BOLIVIA. Santa Cruz, Ichilo, Río Ibabo, Reserva Forestal Choré, Bosque Experimental “ Elias Meneces ”, líneas 3 & 4 del inventario forestal, elev. 180 m, 16 ° 35 ’ S, 64 ° 31 ’ W, 5 – 10 August 1990, fr., Neill et al. 9231 (G!, K!, MBM!, MO!, NY!, U!). La Paz: Larecaja, Alto Beni, Concesión de la Cooperativa San Luis, cerca del arroyo Mayaya, 380 m, 28 November 1996, sterile, R. Seidel et al. 8129 (K). Sud Yungas, Alto Beni, Sapecho, 22 January 1997, fl., W. Steiner 1121 (K).	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA1FFDD39D30F364320BE39.taxon	discussion	Mimosa virginalis Arruda was cited by Koster (1816) in a brief comment about the medicinal use of the plant, especially regarding its astringent properties, without mentioning any of its morphological characteristics or anything that can be interpreted as a diagnosis. There is no intention of the author in treating the plant as a new species, or as a species distinct from the remaining Mimosa. According to Stafleu & Cowan (1976), the nomenclatural types of the species described by Arruda da Câmara are unknown, thus it is not possible to confirm the identity of Mimosa virginalis, neither as a synonym of Stryphnodendron adstringens, as frequently recognized.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA1FFDD39D3094247EEB8FD.taxon	materials_examined	— Type: SURINAME, Sectie N, 15 April 1906, Plassckaert 63 a (lectotype U 0003440!, designated here, isolectotypes K!, MO! NY! U 0003441!)	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA1FFDD39D3094247EEB8FD.taxon	discussion	The original description of Stryphnodendron flammatum is based on a fragment of a compound leaf and lists general characteristics of the Leguminosae. This vague description and the vegetative type specimens preclude the recognition of this taxon as any existing species of Stryphnodendron, or as any genus of Fabaceae, since the specimens lack the apical bud with the characteristic indumentum and prefoliation, and the extrafloral nectaries of the petioles, rachis or rachillae.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
2B595F44FFA1FFDD39D3094247EEB8FD.taxon	description	We found several duplicates of the type indicated by Kleinhoonte (1926), requiring the lectotypification performed here.	en	Scalon, Viviane Renata, Paula-Souza, Juliana De, Lima, Alexandre Gibau De, Souza, Vinicius Castro (2022): A synopsis of the genus Stryphnodendron (Fabaceae, Caesalpinioideae, mimosoid clade). Phytotaxa 544 (3): 227-279, DOI: 10.11646/phytotaxa.544.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.544.3.1
