Peltogyne angustiflora Ducke, 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 : 11-14

2. Peltogyne angustiflora Ducke, Jard. Bot. Rio de Janeiro 4: 49. 1925.

Holotype:— BRAZIL. Rio de Janeiro: Silvestre, morro do Corcovado , 21 July 1922, J. G. Kuhlmann 188, BR539672 (Holotype: RB!; Isotypes: CEPEC, K, NY, P, SP! U, US). Fig 7 .

Tree, 7–16(–20–27) m tall, bark smooth, grayish, branches lenticellate, grooved, stipules early deciduous. Leaflets elliptic, oblong to obovate, not falcate, 7.5–10 × 2.5–5 cm, base attenuate, apex acuminate, glabrous, wax absent on both surfaces, discolorous, adaxial surface glossy, petiole 12–22 mm long, petiolule 3–5 mm long, blade elongated, pulvinus dilated, primary vein inconspicuous adaxially and conspicuous and heavily blackened abaxially, secondary veins conspicuous on both sides, glands evident under magnifying glass. Inflorescence a panicle, terminal, densiflorous, rachis velutinous, 3–10 cm long, inserted in a non-aphyllous branch. Pedicel 7–12 mm long, bracteoles caducous, hypanthium present, 3–5 × 5–6 mm, obconic.Bud 6–8 × 10–15 mm, sepals oblong to subtriangular, outer side tomentose, inner side pubescent, margin glabrous, glands present on the adaxial side, petals elliptic to oblanceolate, unguiculate, glabrous, glands present. Stamens of different sizes, antesepalous filaments 7–12 mm, antepetalous filaments 5–7 mm. Stipe glabrous with sparse trichomes, 1–3 mm long. Ovary semicircular, commonly D-shaped, glabrous, 3–4 mm long, style with terminal insertion, 13–20 mm long. Fruit a legume, dehiscent, triangular (cymitiform), without a protuberance, compressed, 5.5 × 2 cm, stipitate, nectary disc not persistent, glabrous, glands present, veins present, not winged.

Phenology —Collected in flower between November and December and in fruit between March and May.

Distribution and habitat— Peltogyne angustiflora is widely distributed in the Atlantic Forest, in the states of Rio de Janeiro, Espírito Santo, and southern Bahia ( Fig 3 ).

Taxonomic comments— Peltogyne angustiflora is characterized by its smooth bark, attenuate leaf base, stamens of different sizes, and cymitiform fruits. Due to its large size (~ 27 m), this species is sometimes confused with P. confertiflora due to the shape of the inflorescence and buds. However, P. confertiflora has bark with longitudinal grooves, a rounded base (with the petiole not inserted at the end), stamens of the same size, and triangular fruits.

Etymology—angusti, narrow; flora, flower.

Specimens examined — BRAZIL. Bahia: Ilhéus, Área do CEPEC ( Centro de Pesquisas do Cacau ) , Km 22 da Rodovia Ilhéus Itabuna ( BR 415 ), 17 May 1985, T. S . dos Santos 3967 ( INPA ); Mucuri, BA-698, Rodovia para Mucurí, Km 35. Remanescente em plantação de eucalipto, s.d., H. C . de Lima 6900 ( RB); Santa Cruz de Cabrália, Estação Ecol. do Pau Brasil , cerca de 16km W de Porto Seguro, rod. BR 367 , s.d., F. S. Santos 769 ( RB); Una , Faz. São Rafael, 18 December 1968, T. S . Santos 328 ( RB); Fazendas Maruim e Dois de Julho, 33 Km SW de Olivença na estrada de Olivença para Buerarema, 29 April 1981, S. A . Mori 13832 ( INPA ); Espírito Santo: Derrubada dos Paulistas, Córrego Dourado, 21 July 1954, A . Magnanini 21 ( RB); Juparaná-mirim, Rio Doce , 24 April 1934, J. G . Kuhlmann 270 ( RB); Aracruz, Estrada para Coqueiral, 2 km após Aracruz, 04 April 2007, H. C . de Lima 6596 ( RB); Baixo Guandu, Trilha da Cachoeira , 16 July 2004, A. A . da Luz 204 ( RB); Colatina, Margens altas do rio Pancas, afluente do rio Doce , 19 September 1930, J. G . Kuhlmann 362 ( RB); Linhares , 5 January 1978, J . Spada 14 ( MG!); Reserva Florestal CVRD , próxima da vermelhinha matriz 03; estrada baba de boi, 28 September 1990, G. L . Farias 400 ( RB, UEC); Est. Flamengo , km 13, 360, lado direito, 16 October 1980, D. A . Folli 279 ( UEC, RB); Pessoal da Reserva da Cia. Vale do Rio Doce , 1978, R carpo 5128 ( RB00773551 ); 02 September 2004, D. A . Folli 4917 ( RB) ; Minas Gerais, Faria Lemos, Fazenda Santa Rita, November 2007, L. S . Leoni 7040, ( RB); 30 November 2007, L. S . Leoni 7062 ( RB) ; Rio de Janeiro, Rio de Janeiro, Corcovado, Silvestre, 21 December 1922, A . Ducke SP 429598 ( SP); 05 November 1921, A . Ducke RB 501 ! ( RB00773551 ); 30 July 1927, Antenor 23687 ( R, RB); Silvestre , 22 December 1922, J. G . Kuhlmann 188 ( R); Casimiro de Abreu, Excursão à Mata do Carvão , 16 July 1997, H. C . de Lima 5431 ( RB); Guapimirim, Estação Ecológica Estadual de Paraíso , Picada para a Serra Queimada, 28 August 1991, H. C . de Lima 4231 ( RB); Serra Queimada, descida do Bananal do Meio , próximo a cabana de caçadores, 21 November 1991, H. C . de Lima 4337 ( RB); Nova Iguaçu, Catanudo, picada para a Serra do Beco , 16 November 1995, H. C . de Lima 5228 ( RB); Estrada do Comercio , próximo à sede, após o portão, 14 November 1995, P. R . Farag 139 ( RB, UEC); Morro Mundo Novo , campus da universidade Santa Úrsula, 23 July 1998, J. M. A . Braga 4919 ( UEC, RB); R ! 67007 ( R); Horto Florestal, próximo ao Solar da Imperatriz , atrás do galpão, 15 August 2003, R . Matheus s.n. RB 387339 ( RB) .

Digital images — BRAZIL. Bahia: Una, Reserva biológica de Una. Fazendas Maruim e Dois de Julho , s.d., S . A . Mori 13832 ( NY) ; Rio de Janeiro, Rio de Janeiro, Matas do Pai Ricardo perto da sede do Horto Florestal, 30 December 1927, Pessoal do Horto 20 ( K) .

Vernacular names —Guarabu, Guarabu roxo, Roxinho, Pau Roxo.

Figures

FIGURE 3. Distribution map of species of Peltogyne in the Atlantic Forest.

FIGURE 7. Peltogyne angustiflora Ducke. A, branch with leaflets, and inflorescence (scale: 5 cm). B, flower bud (scale: 10 mm). C, longitudinal section, and hypanthium, without floral verticils; stipe, ovary, and style. D, set of petals (scale: 3 mm). E, stamen (scale: 3 mm). F, fruit before dehiscence (scale: 2 cm). G, fruit with externalized seed (scale: 2 cm). Illustrated by Fábio Júnior Kochanovski.