Euphorbia millotii

Described in 1955 by Eugène Ursch and Jacques Désiré Leandri, Euphorbia millotii is endemic to Northwest Madagascar and is threatened by habitat loss. The International Union for Conservation of Nature and Natural Resources (IUCN) lists this plant as critically endangered and notes the following: "The species grows only in the vicinity of the coastal Lac Bleu, near Vohemar. Its habitat, coastal tropical and sub-tropical shrubland is highly threatened by human activities. It is also a desirable species for cultivation, increasing the threat of extinction in the wild."

These plants are seed grown and do not contribute to the endangered status. Indeed, wide distribution of these plants may very well be the primary means whereby the species is preserved.