A taxonomic revision of the genus Eperua (Leguminosae, Detarioideae, Detarieae) Author Fortes, Elenice A. Programa de Pós-Graduação em Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Rua Monteiro Lobato, 255, Campinas, São Paulo, Brazil, 13083 - 862. forteselenice @ gmail. com; https: // orcid. org / 0000 - 0001 - 8307 - 6534 forteselenice@gmail.com Author Dos, Ilka P. Programa de Pós Graduação em Ciências Biológicas, área de concentração Botânica Tropical, Universidade Federal Rural da Amazônia e Museu Paraense Emílio Goeldi, Av. Perimetral, 1901, Terra Firme, Belém, Pará, Brasil, CEP 66077 - 83 o. ilkapreis @ gmail. com; https: // orcid. org / 0009 - 0001 - 2511 - 2821 ilkapreis@gmail.com Author Steege, Hans Ter Naturalis Biodiversity Center, Leiden, The Netherlands; hans. tersteege @ naturalis. nl; https: // orcid. org / 0000 - 0002 - 8738 - 2659 & Quantitative Biodiversity Dynamics, Dept. of Biology, Utrecht University, Utrecht, The Netherlands hans.tersteege@naturalis.nl Author Aymard, Gerardo UNELLEZ-Guanare, Programa de Ciencias del Agro y del Mar, Herbario Universitario (PORT), Mesa de Cavacas, estado Portuguesa, Venezuela, 3350; gerardo. aymard @ gmail. com; https: // orcid. org / 0000 - 0001 - 9405 - 0508; & Compensation International Progress S. A. Ciprogress-Greenlife, Bogotá D. C., Colombia gerardo.aymard@gmail.com Author Secco, Ricardo De S. Museu Paraense Emilio Goeldi - MPEG Museu Paraense Emílio Goeldi / Universidade Federal Rural da Amazônia, Programa de Pós-Graduação em Ciências Biológicas - Botânica Tropical, Belém, Pará, Brazil, 66077 - 830 rsecco @ museu-goeldi. br; https: // orcid. org / 0000 - 0002 - 3295 - 7929 rsecco@museu-goeldi.br Author Martins-Da-Silva, Regina Célia V. Empresa Brasileira de Pesquisa Agropecuária, Embrapa Amazônia Oriental, Laboratório de Botânica, Trav. Enéas Pinheiro, s / n, Marco, CEP 66095 - 903 Author Mansano, Vidal F. Programa de Pós-Graduação em Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Rua Monteiro Lobato, 255, Campinas, São Paulo, Brazil, 13083 - 862. forteselenice @ gmail. com; https: // orcid. org / 0000 - 0001 - 8307 - 6534 & Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão, 915, Rio de Janeiro, RJ, Brazil, 22460 - 030 vidalmansano @ gmail. com; https: // orcid. org / 0000 - 0002 - 7204 - 0744 * Corresponding author & Programa de Pós-Graduação em Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Rua Monteiro Lobato, 255, Campinas, São Paulo, Brazil, 13083 - 862. forteselenice @ gmail. com; https: // orcid. org / 0000 - 0001 - 8307 - 6534 forteselenice@gmail.com text Phytotaxa 2023 2023-09-28 617 1 1 127 http://dx.doi.org/10.11646/phytotaxa.617.1.1 journal article 10.11646/phytotaxa.617.1.1 1179-3163 8389766 10b. Eperua jenmanii Oliv. subsp. sandwithii R.S. Cowan (1975: 37) Type: — VENEZUELA . Bolivar : Raudaul Guaiquinima, 200 m elev., 16–19 January 1952 , Maguire B . 33136 ( holotype NY [00004381] image!; isotypes F [0057802] image!, GH not seen, P [00252890] image!, RB [00539604]!, US [00001147]!) . Inflorescences glabrous; bracts and bracteoles glabrous, ciliate, pedicel , buds , and hypanthium glabrous; stamens sheath shorter side 4.5–13.0 mm long, longer side 6.1–18.0 mm long. Phenology:— Flowering in January, March, April, May, July, August, September, and November; fruiting in March, May, September, October, and December. Distribution:— Unlike the type subspecies it occurs mainly in the Orinoco River basin in Venezuela (Caura, Caroni, Paragua rivers). But it was also collected in Brazil’s upper Uraricoera River and the Kako River in Guyana . Habitat:— Floodplain forests (e.g. in Mora dominated forest), on white sand and laterite soils, at 107–1000 m elev. Occurrence in protected areas:— Unknown. Etymology:— The epithet sandwithii is a tribute to N.Y. Sandwith, a botanist who collected and revised the genus Eperua in Guyana ( Cowan 1975 , Sandwith 1931 ). Vernacular names:— concha-de-suela ( Blanco C.A. 598 , Liesner R.L. & González A.C. 5860 ), opai-yek ( Maguire B. et al. 46734 ), tehuwadu (Maiongong name, Milliken W. 2106 ), tumai-yek ( Steyermark J.A. 75537 ). Uses:— Unknown. Taxonomic notes:— Eperua jenmanii subsp. sandwithii differs from the type subspecies by its glabrous bracts, bracteoles, inflorescence, and hypanthium (vs. puberulent in subsp. jenmanii ), and the stamens sheath tends to be smaller (vs. larger in subsp. jenmanii ). Cowan (1975) described this subspecies as having epunctate leaflets, but the isotype at RB herbarium clearly shows pellucid-punctate glands in the leaflets. Furthermore, observations revealed that both subspecies have blades ranging from epunctate to pellucid-punctate. Specimens examined:— BRAZIL . Roraima , Alto Alegre , environs of the Maiongon village close to the FUNAI PIN Uaikas on the (alto) rio Uraricoera , 300 m elev., 3°33’0”N 60°28’0”W [inaccurate coordinate not in upper Uraricoera River, not added to map], September 1994 , Milliken W . 2106 ( INPA , K , MIRR , NY ); vicinity of Uaicá airstrip, rio Uraricoera , river margin, 2°53’0”N 63°36’0”W – 3°33’0”N 63°11’0”W , 07 March 1971 , Prance G . T . et al. 10871 (F, INPA , K, MG, NY, R, U, US). VENEZUELA . Bolívar , Aripao , rio Caura , 5 –20 km sur (rio arriba) del campamento las Pavas (salto Para ), 220–240 m elev., 6°15’0”N 64°25’0”W , May 1982 , Morillo G . & Liesner R . L . 8886 ( US ); Caño Pablo , tributary of Río Caura , ca 6–9 km east of Río Caura ca 10 km east south of Las Pavas ( Salto Para ), 240 m elev., 6°14’0”N 64°23’0”W , 10 May 1982 , Liesner R . L . & Morillo G . 13972 ( US ). Barceloneta , Sierra Ichun : María Espuma ( Salto Ichun ) along the rio Ichun , tributary of rio Paragua , 500–625 m elev., 4°46’0”N 63°18’0”W , 29 December 1961 , Steyermark J . A . 90416 ( US ). Gran Sabana , Chimatá Massif , vinicity of base camp, near Río Tirica , lower southwestern slopes of Chimantá-tepuí ( Torono-tepuí ), 1000 m elev., 24 May 1953 , Steyermark J . A . 75537 (F).