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 9b. Eperua grandiflora subsp. guyanensis R.S. Cowan (1975: 34) Type : — GUYANA . Bartica-Potaro . 83 mi Bartica-Potaro road, 23 June 1933 , Tutin T . G . 245 ( holotype US00001146!, isotypes, BM000952283 image!, K000555101 image!, U0003225 image!) . Leaves margin very revolute, rarely flat. Inflorescences pubescent, puberulous to glabrescent; bracts tomentose, pubescent to puberulous externally, glabrous within; bracteoles 1.9–3.0 × 1.5–3.4 mm , pubescent to puberulous on both sides to glabrous within; pedicel puberulous, pubescent to tomentose; buds pubescent to puberulous, sometimes glabrescent. Flowers : hypanthium tomentose, pubescent to puberulous; sepal pubescent, puberulous to glabrescent; stamens sheath entirely pubescent to puberulous; ovary sericeous. Legumes puberulous. Phenology:— Flowering from February to April, in June, July, and from September to November; fruiting in January, April, May, August, and October. Distribution:— Guyana ( Cuyuni-Mazaruni , Essequibo Islands–West Demerara , Pomeroon-Supenaam , Potaro-Siparuni , Upper Demerara-Berbice ) and Surinam ( Nickerie ). Habitat:— White sand ecosystems in wallaba forest, from sea level to 200 m elev, on white and brown sand, sometimes on white sand-brown loamy sand-bauxite mosaic. Occurrence in protected areas:— Mabura Hill Forest Reserve ( Guyana , Upper Demerara-Berbice ), Pibiri Forest Reserve ( Guyana , Upper Demerara-Berbice ). Etymology:— The specific epithet relates to its distribution in Guyana . Vernacular names:— ituri-wallaba ( Ek R.C. & Zagt R. 855 , Forest Department 2311 , Redden K.M. et al. 1053 , Sandwith N.Y. 314 , Tutin T.G. 245 ), wapa-courbaril ( Coup C. CL203 ). Uses:— Guyana : firewood ( Tutin T.G. 245 ), light poles ( Redden K.M. et al. 1053 ), fences, posts, electricity poles, and roof shingles (H. ter Steege pers. obs.). Taxonomic notes:— See taxonomic notes of the type subspecies. Selected specimens:— GUYANA . Cuyuni-Mazaruni , Bartica , Essequibo River , Moraballi Creek , near Bartica , 20 September 1929 , Sandwith N . Y . 314 ( RB , U ). Essequibo-Demerara Ocidental , 4 km from Santa Mision , 0–200 m elev., 6°30’0”N 58°23’W , 25 November 1992 , G ̂rts-van Rijn A . R . A . et al. 403 ( CAY , U , US ). Pomeroon-Supenaam , Waraputa compartment, c. 25 km S of Mabura , 0–100 m elev., 5°15’0”N 58°45’0”W , 10 October 1991 , Polak A . M . et al. 364 (U). GUYANA . Potaro-Siparuni , Kuribrong , 112 m elev., 5°21’0”S 59°15’0”W , April 2010 , Zartman C . E . 7928 ( INPA, RB ). Upper Demerara-Berbice , Mabura Hill area , 150–200 m elev., 5°20’0”N 58°40’0”W , 05 June 1986 , Pipoly J . J . 7560 ( CAY , F , INPA, MO, P, U, US, WAG ); Mabura Hill Forest Reserve , main trail, 69 m elev., 5°9’33.8”N 58°41’51.8”W , 20 October 2002 , Redden K . M . et al. 1053 (U, US). SURINAM . Nickerie , Arkonikreek , Nickerie rivier, 28 August 1976 , Teunissen P . A . 16010 (U).