Monographs Details: Mitracarpus parvulus K.Schum.
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Discussion:The Gaillard 208 collection was identified by Standley as M. microspermus Schum., under which species it was placed in Standley’s Rubiaceae of Venezuela, but an examination of this specimen shows that the corolla is shorter than the calyx lobes and externally glabrous, while the leaves are 1.5-4 mm long and densely hispidulous on both sides.