Kingdom Plantae Family Apocynaceae Rank Genus | Order Gentianales Subfamily Asclepiadoideae | |
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Oncostemma is a species of plants in the Apocynaceae first described as a genus in 1893. It contains only one known species, Oncostemma cuspidatum, native to the Island of São Tomé off the coast of central Africa.
References
Oncostemma Wikipedia(Text) CC BY-SA