Monographs Details: Palicourea guianensis subsp. occidentalis var. glabrescens Steyerm.
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Rubiaceae
Discussion:

Palicourea guianensis Aubl., Pl. Guian. 1: 173. pl. 66. 1775.

Psychotria guianensis Raeusch., Nomencl. ed. 3. 56. 1797, not Mapouria guianensis Aubl., Pl. Guian. 1: 175. pl. 67. 1775.

Psychotria guianensis (Aubl.) Rusby, Mem. Torrey Club 3: 48. 1893.

Psychotria cataractarum M.-Arg., Mart. Fl. Bras. 6(5): 226. 1881.

Nonatelia cataractarum (M.-Arg.) O. Kuntze, Rev. Gen. 1: 291. 1891.

Palicourea guianensis var trimera Brem., Rec. Trav. Bot. Neerl. 31: 283. 1934.

Palicourea guianensis var tetramera Brem., Rec. Trav. Bot. Neerl. 31: 283. 1934.

Müller-Argoviensis described the ovary of Psychotria cataractarum as 4-5-celled. My own examination of an isotype collection at NY shows ovaries with 3 or 4 cells, most of them 4-celled.