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. Microtuberosa Moonlight & Tebbitt European Journal of Taxonomy 281: 4 ( Moonlight et al. 2017a ). – Type : holotype : Begonia elachista Moonlight & Tebbitt. Notes This is a monotypic section and the only endemic section of Begonia to Peru . It was erected by Moonlight & Tebbitt (2017a) based upon molecular evidence, which demonstrated that B. elachista was distantly related from all other tuberous Andean Begonia species and allied with two sections endemic to the Atlantic Rainforests of eastern South America. It is best recognised by its much smaller size (< 3 cm tall vs> 15 cm tall) and fewer stamens (two or four vs> 5) than all other tuberous Andean begonias.