Two New Critically Endangered Species of Begonia sect. Gireoudia (Begoniaceae) from Mesoamerica

Abstract

Two species new to science, Begonia multiloba Moonlight and B. merendonensis Moonlight & D. L. Kelly, are described, from Guatemala and Honduras, respectively. These species are illustrated and diagnosed against similar species and are assigned provisional IUCN assessments as Critically Endangered because of their small ranges and the severe deforestation within those ranges. Both species are treated as members of Begonia L. sect. Gireoudia (Klotzsch) A. DC.