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Oncocalamus is a monoecious genus of flowering plants in the palm family found in western Africa. The genus is the lone member of the Oncocalaminae; once placed with the vegetatively similar Eremospatha and Laccosperma in the Ancistrophyllinae, it is now isolated based on their unusual flowers and arrangement. Such a placement argues for a long and complex evolutionary process in the Calamoideae with heavy extinction rates. The Greek genus name combines "horn" and "capsule".
Strictly low land rain forest inhabitants, they are found in equatorial west Africa.
Text excerpted from the Wikipedia article Oncocalamus by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
