Monographs Details: Stachyarrhena
Authority: Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.
Family:Rubiaceae
Scientific Name:Stachyarrhena
Discussion:This genus is a very distinct member of the tribe Gardenieae, obviously related to other dioecious genera of that tribe, but particularly different from its allied genera in having the staminate flowers in elongated spikes or subspicate inflorescences. Difficulty in identification of the species is due to the incomplete knowledge at present of both sexes, since most of the species are known only from staminate material.