Didierea is a genus of succulent flowering plants in the family Didiereaceae. It is dedicated to naturalist Alfred Grandidier (1836-1921).

Species of Didierea are dioecious, with male and female flowers on separate plants. The two accepted and known species are endemic to Madagascar, though there are some species which are no longer considered part of this genus, where they are found in the spiny forest–thicket ecosystem. They are listed in CITES appendix II, which means that their trade is restricted to protect natural populations.

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