War, types, and Mandevilla (Apocynaceae): a new species and the rediscovery of a rare species from Brazil

Abstract

The true identity of Mandevilla luetzelburgii (Apocynaceae) is clarified and the new M. bullata, largely misidentified as the former species, is described. Drawings for both species are given and a key for morphologically related species is provided. A lectotype is selected for Dipladenia luetzelburgii Ross & Markgr. Mandevilla bullata is assessed as Endangered (EN) and M. luetzelburgii as Critically Endangered (CR), according to IUCN criteria.