Typification issues in Euphorbia section Plagianthae (Euphorbiaceae)

Abstract

Euphorbia section Plagianthae contains only two highly distinctive accepted species of Malagasy endemic Euphorbia, restricted to the arid southern part of the island. In this paper we propose an epitype for Euphorbia plagiantha, and a lectotype for Euphorbia fiha, a name designated as a synonym of Euphorbia plagiantha. We also designate a lectotype for Euphorbia salota, and present a distribution map for the section in Madagascar.