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Published: 2021-03-29

Taxonomic changes and new species in Malagasy Euphorbia (Euphorbiaceae)

Institut de Systématique Évolution Biodiversité (ISYEB), Muséum national d’histoire naturelle, Centre national de la recherche scientifique, École Pratique des Hautes Études, Université des Antilles, Sorbonne Université.  45 rue Buffon, CP 50, 75005 Paris, France.
National Tree Museum Gimborn, Velperengh 13, 3941 BZ Doorn, The Netherlands
Conservation Madagascar micro-endemics section Denisophorbia section Goniostema section Pervilleanae xerophytes Eudicots


Several species of Malagasy Euphorbia are described and compared to related species in their respective sections, along with identification keys for morphologically close relatives and distribution maps: Euphorbia agatheae, Euphorbia atimovatae, Euphorbia fuscoclada, Euphorbia graciliramulosa, Euphorbia kalambatitrensis, Euphorbia linguiformis, Euphorbia mahaboana, Euphorbia makayensis, Euphorbia multibrachiata, Euphorbia parvimedusae, Euphorbia perrierioides, Euphorbia rigidispina, Euphorbia spannringii, Euphorbia tsihombensis. New synonyms and new combinations and statuses are proposed, such as Euphorbia antsingiensis and Euphorbia crassa, and a lectotype is selected for Euphorbia rangovalensis.