Monographs Details: Voyriella oxycarpha Sandwith
Authority: Maguire, Bassett. 1989. The Botany of the Guayana Highland- Part XIII. Mem. New York Bot. Gard. XIII: 1-127.
Family:Gentianaceae
Description:Distribution and Ecology - Guyana, Venezuela, and Amazonas, Brazil. BRAZIL, amazonas: Forest above Cachoeira Iracema, Rio Umbu, 5 Jun 1968, Prance et al. 4966 (NY).

Discussion:

Type. Yawakuri, 70-80 ft alt, growing on dead leaves, Guyana, 2 Jan 1919, Abraham 163 (holotype K, presumably destroyed in B fide Maas & Ruyters, 1986).

Specimens examined. VENEZUELA, territorio federal amazonas: Piedra Arauicaua, Rio Pacimoni-Yatua, 130 m , 15 Jul 1959, Wurdack & Adderiey 43462 (NY); Rio Siapa above Raudal Gallineta, 130-140 m, 23 Jul 1959, Wurdack & Adderiey 43604 (NY), bolivar: En bosque 750 m, Rio Icabaru, 12 Jan 1956, Bernardi s.n. (NY).