Monographs Details: Psychotria microcephala Miq.
Authority: Maguire, Bassett. 1967. The botany of the Guayana Highland--Part VII. Mem. New York Bot. Gard. 17: 1-439.

Type. In sylvis prope Paramaribo, Suriname, March-April 1844, Kappler 1562.

A study of the Kappler specimen shows the flowers without their own bracts and bracteoles. For this reason, I am retaining this taxon in Psychotria.