Peltogyne floribunda (Kunth) Benth., Arch. Jard. Bot.

Kochanovski, Fabio J., Nogueira, Luan H. P., Rosa, Marcus P. G., Mansano, Vidal F. & Sartori, Ângela L. B., 2025, Taxonomic review of the genus Peltogyne Vogel (Leguminosae, Detarioideae), Phytotaxa 688 (1), pp. 1-68 : 36

11. Peltogyne floribunda (Kunth) Benth., Arch. Jard. Bot. Rio de Janeiro 3: 97. 1922.

Holotype:— GUIANA!, entre trapiche de Don Farreras e Angostura, 1833, A. Humbolt & A. Bonpland 1060 (Holotype: P). Fig 16 . ≡ Hymenaea floribunda Kunth (1824:323)

≡ Hymenaea latifolia Hayne (1830:11)

= Peltogyne latifolia Benth (1870:232)

≡ Peltogyne porphyrocardia Griseb. ex Benth (1870:234) (nom. nud.)

Tree or shrub, 16–20 m tall, bark smooth, grayish, branches striate and scaly, grayish, stipules early deciduous. Leaflets elliptic to oval, not falcate, 11–14 × 5–9 cm, base rounded, apex obtuse, glabrous, wax absent on both surfaces, discolorous, petiole 8–15 mm long, petiolule 1–3 mm long, blade decurrent, pulvinus dilated, primary vein conspicuous and striate abaxially, secondary veins inconspicuous on both sides, glands absent. Inflorescence a panicle, terminal, laxiflorous, rachis glabrous, 17–21 cm long, inserted in a non-aphyllous branch. Pedicel 2–3 mm long, bracteoles caducous, hypanthium absent. Bud 5 × 5 mm, sepals orbicular, outer side velutinous, inner side glabrous, glands present, petals oblanceolate, sessile, glabrous, glands present. Stamens of equal size, filaments 6–6.5 mm long. Stipe absent. Ovary 4–5 mm long, rhombic, tomentose, 4 mm, style with terminal insertion, 3–4 mm long. Fruit a legume, dehiscent, orbicular, without a protuberance, slightly inflated, inflated–compressed, 3.4 × 2.5 cm, sessile, nectary disc not persistent, glabrous, glands present, veins present, not winged.

Phenology —Collected in flower between June and August and in fruit between January and March.

Distribution and habitat— Peltogyne floribunda is an Amazonian species found in high-altitude areas of Venezuela and Guyana. In Brazil, its occurrence is restricted to Roraima, on the border with Venezuela ( Fig 5 ).

Taxonomic comments— Peltogyne floribunda has no stipe, which is rare in the Hymenaea clade. This species is similar to P.parvifolia , but differs by the decurrent blade of the leaflet, a dilated pulvinus, and the absence of hypanthium. P. parvifolia has a non-decurrent blade, a non-dilated pulvinus, and an obconic hypanthium. Adolfo Ducke (1922) recombined Hymenaea floribunda in the genus Peltogyne , using the name P. floribunda [Hayne (1830:11) Getreue Darstell. Gew. xi. t. 7. (1856) (Holotype: Illustration t.7) Benth (= P. floribunda (H.B.K) Benth)], on which occasion he recognized J.G. Kuhlmann’s collection (RB! 3860) as identical to the description of H. floribunda . However, only four years later, Pittier (1926) published the appropriate description for P. floribunda . Based on the principle of priority, the name adopted by Ducke is the correct one.

Etymology—floribundus, flowers in abundance.

Specimens examined — BRAZIL. Amazonas: Serra Da Cigana, perto de Boa Vista , August 1913, J. G . Kuhlmann 759 ( RB!); Roraima: Roraima-Boa Vista , 12 February 1977, N. A . Rosa 1460 ( RB!) ; GUIANA. Kanuku, Rupununi , R , Bush Mouth Near Witary Falls , 11 February 1985, M. J . Jansen-Jacobs 159 ( RB!, MG!) ; VENEZUELA. Amazonas: NE of Upata, Primary forrest, 22 March 1966, F. J . Breteler 5109 ( IAN!); Bolívar: Represa Guri, ca. 0,5 Km SSW of dam, 01 July 1981, R. L . Liesner 11026, ( INPA !); Território Federal Delta Amacuro: Bosque Pluvial , Este De Rio Grande , 20 February1964, L. M . Berti 90 ( RB!); Carretera El Tigre-La Soledad, 29 May 1965, L . Marcano-Berti 745 ( IAN!) .

Digital images — GUIANA. Mouatains , Rupununi distr, Kusad Mountains, 27 September 1992, Jansen-Jacobs 2652, ( P); 30 September 1992, Jansen-Jacobs 2711 ( P) .

Figures

FIGURE 5. Distribution map of species of Peltogyne in solid ground, relatively far from floodplains in the Amazon.

FIGURE 16. Peltogyne floribunda (Kunth) Benth.. A, branch with leaflets, and inflorescence (scale: 5 cm). B, flower bud in pre-anthesis (scale: 5 mm). C, fruit, and seed (scale: 1 cm). Illustrated by Fábio Júnior Kochanovski.