Monographs Details: Psychotria costanensis Steyerm.
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Rubiaceae
Discussion:Cephaelis macrocarpa Standl., Field Mus. Publ. Bot. 8: 64. 1930, not Psychotria macrocarpa Hook, f., Fl. Br. Ind. 3: 162. 1880.