Monographs Details: Psychotria blakei Standl. & Steyerm.
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Rubiaceae
Discussion:The caudate appendage of the bracts of the inflorescence is much more conspicuous (1.5-2 mm long) than in P. lupulina and subspecies, the marginal nerve more conspicuously thickened, and the stem is much stouter than in that species.