Cladogelonium is a monotypic plant genus of the family Euphorbiaceae first described as a genus in 1939.Leandri, Jacques Désiré. 1939. Bulletin de la Société Botanique de France 85: 530Tropicos, Cladogelonium Leandri
The only known species is the shrub Cladogelonium madagascariense. It is found in the Analamerana Special Reserve in northern Madagascar.Kew World Checklist of Selected Plant Families
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