Cormonema Reissek ex Endl. Hybosperma Urb. Colubrina is a genus of about 30 species of flowering plants in the buckthorn family, Rhamnaceae, native to warm temperate to tropical regions of Africa, the Americas, southern Asia, northern Australia, and the Indian Ocean islands. Common names include nakedwood, snakewood, greenheart and hogplum. The ge... Found on http://en.wikipedia.org/wiki/Colubrina