Choriceras is represented by a single species in southern New Guinea (C. tricorne), as is Petalostigma (P. pubescens). The two species also occur in northern Australia. Fontainea comprises two endemic species in New Guinea ( F. borealis and F. subpapuana).

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Blumea: Biodiversity, Evolution and Biogeography of Plants

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Naturalis journals & series

Forster, P. I., & van Welzen, P. C. (1999). The Malesian species of Choriceras, Fontainea, and Petalostigma (Euphorbiaceae). Blumea: Biodiversity, Evolution and Biogeography of Plants, 44(1), 99–107.