Monographs Details: Potarophytum riparium Sandwith
Authority: Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.
Family:Rapateaceae
Description:Distribution and Ecology - In addition to the type collection is the following: locally frequent in boggy place along stream near Potaro River Landing, Kaieteur Plateau, May 11, 1944, Maguire & Fanshawe 23396.A monotypic genus, known only from the Kaieteur Plateau near the head of the falls.

Discussion:

Type: Kaiteur Falls, in deep shade by a stream in the forest, Potaro River, British Guiana, at 400 m alt., Sept 5, 1937, Sandwith 1382 (holotype K).