The genus Begonia (Begoniaceae) in Peru Author Moonlight, Peter. W. Royal Botanic Garden Edinburgh, 20 A Inverleith Row, Edinburgh, EH 3 5 LR, Scotland, UK. & Botany Department, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland. moonligp@tcd.ie Author Jara-Muñoz, Orlando A. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá D. C., Colombia. oajaram@unal.edu.co Author Purvis, David A. Royal Botanic Garden Edinburgh, 20 A Inverleith Row, Edinburgh, EH 3 5 LR, Scotland, UK. dpurvis@rbge.org.uk Author Delves, Jay Royal Botanic Garden Edinburgh, 20 A Inverleith Row, Edinburgh, EH 3 5 LR, Scotland, UK. j.delves@westernsydney.edu.au Author Allen, Josh P. Royal Botanic Garden Edinburgh, 20 A Inverleith Row, Edinburgh, EH 3 5 LR, Scotland, UK. myrmeciaman@gmail.com Author Reynel, Carlos Facultad de Ciencias Forestales, Universidad Nacional Agraria-La Molina, Lima 12, Peru. reynel@lamolina.edu.pe text European Journal of Taxonomy 2023 2023-07-18 881 1 334 http://dx.doi.org/10.5852/ejt.2023.881.2175 journal article https://doi.org/10.5852/ejt.2023.881.2175 2118-9773 8178280 Begonia sect. Eupetalum (Lindl.) A.DC. Prodromus Systematis Naturalis Regni Vegetabilis 15 (1): 280 ( de Candolle 1864 ). – Eupetalum Lindl., A natural system of botany, 2 nd ed. : 440 ( Lindley 1836 ). – Type : holotype : Eupetalum petalodes Lindl. = Begonia geraniifolia Hook. Synonymy notes For a full list of sectional synonyms, see Moonlight et al. (2018) . Notes Most geophytic Peruvian begonias are members of this section, which is distributed from Argentina to Colombia . The circumscription of B. sect. Eupetalum was significantly reduced by Moonlight et al. (2018) to include mostly acaulescent species with multifid styles and an unusually high number of tepals on both the staminate and pistillate flowers. Their circumscription also included three species that are either caulescent ( B. geranifolia and B. neoharlingii ), have bifid styles ( B. weberbaueri ), or only have four and five tepals on their staminate and pistillate flowers, respectively (all three species). Moonlight et al. (2020) added a fourth misfit to the section, B. joshii , which also has bifid styles. The current circumscription of B. sect. Eupetalum includes fifteen species, of which ten are found in Peru and six are endemic. Our account includes an expanded circumscription of B. neoharlingii , which is newly recorded from Peru .