Didymogonyx is a genus of South American bamboo in the grass family.
Species
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Didymogonyx geminatum (McClure) C.D.Tyrrell, L.G.Clark & Londoño - Colombia, Venezuela
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Didymogonyx longispiculatum (Londoño & L.G.Clark) C.D.Tyrrell, L.G.Clark & Londoño - Colombia