Castillon, J.-P. & J.-B. Castillon (2019). Taxonomic and nomenclatural novelties in the genus Euphorbia (Euphorbiaceae) in Madagascar. Candollea 74: 159–167. In French, English and French abstracts.
The identity of Euphorbia neobosseri Rauh is clarified. A new combination Euphorbia mahafalensis var. itampolensis (Rauh) J.-P. Castillon & J.-B. Castillon is proposed. Euphorbia rubrostriata Drake is decribed in detail and neotypified. The origin and typification of Euphorbia annamarieae Rauh is discussed. Lectotypes are designed for: Euphorbia annamarieae Rauh, Euphorbia erythroxyloides Baker, and Euphorbia mangorensis Leandri. Five new synonymies are proposed.