Peltogyne pauciflora Benth. (1870: 234)

Pinto, Rafael Barbosa, Mansano, Vidal De Freitas, Sartori, Ângela Lúcia Bagnatori & Tozzi, Ana Maria Goulart De Azevedo, 2017, Revisiting The Taxonomic Diversity Of Guibourtia In The Neotropics (Leguminosae, Detarioideae), Phytotaxa 327 (2), pp. 130-140 : 136-138

Peltogyne pauciflora Benth. (1870: 234) . Type:— BRAZIL. Bahia: Vila do Barra, 1840, J.S. Blanchet 3150 (Lectotype:

K, designated by Silva (1976), Isolectotype: BM, BR, F, MICH, NY, P).

Peltogyne glaziovii (Taub.) Dwyer (1959: 342) . Cynometra glaziovii Taub. (1892: 76) . Type:— BRAZIL. Minas Gerais. A. Glaziou 13725 (Lectotype: NY, designated by Silva (1976), Isolectotype: P).

Guibourtia confertiflora (Benth.) J. Léonard (1949: 401) , syn. nov. Copaifera confertiflora Benth. (1870: 241) . Copaiba confertiflora (Benth.) Kuntze (1891: 172) . Type:— BRAZIL. “Habitat in campis. Hamadryas. Provincia Piauhy.”, 1819, C. F. P. Martius 2237 (Lectotype: M-0215309, designated here, Isolectotype: M-0215310). Fig. 4.

Taxonomic comments:— Bentham (1870) described the species Copaifera confertiflora based on a collection from Martius “ in campis—Hamadryas ”, in Piauhy, Brazil. Despite Bentham (1870) did not indicate a collection number, the samples with Martius’s annotations were found in M herbarium under the number Martius 2237. Since there are two exsiccates of this collection, a lectotypification is here proposed.

Following the description of Bentham (1870), who did not describe petals for this species, Léonard (1949) combined C. confertiflora under Guibourtia concept, which was also followed by Barneby (1996), who suggested treating this taxon as synonym of G. hymenaeifolia . However, we investigated Martius’s notebook who described five petals and a turbinate shape of the ovary. These characteristics, together with the leaflet shape, suggest a strong similarity with the sympatric species Peltogyne pauciflora . The similarities with Peltogyne species lead H.C. Lima to label the samples as Peltogyne confertiflora (Mart. ex Hayne) Benth. (1870: 232) , however, P. confertiflora presents bigger leaflets, strongly asymmetric and occurs mainly in Cerrado (savanna). These characteristics do not fit with those observed in the material. Hence, we here lower this name under a synonym of P. pauciflora .