Monographs Details: Cuphea cataractarum Spruce ex Koehne
Authority: Maguire, Bassett & Wurdack, John J. 1957. The Botany of the Guiana Highland -- Part II. Mem. New York Bot. Gard. 9 (3): 235-392.
Family:Lythraceae
Discussion:

Rib Cunucunuma, Rib Orinoco, Terr. Amazonas, Venezuela, Maguire, Cowan & Wurdack 29496, 30348; Curran 176. Known only from the region of the Rio Cunucunuma.

The stems, leaves, and calyx are all covered with very fine and quite appressed malpighiaceous hairs which are whitish.