Monographs Details: Tachia grandifolia var. orientalis Maguire & Weaver
Authority: Maguire, Bassett. 1978. The botany of the Guayana Highland--part XI. Mem. New York Bot. Gard. 32: 1-391.
Family:Gentianaceae
Description:Distribution and Ecology - Distribution. Treelet of median altitudes in Roraima Formation forests, drainages of Uraricoera, Brazil, and the Alto Paragua and Alto Caroni, Venezuela.

Discussion:lb. Tachia grandifolia Maguire & Weaver, var orientalis Maguire & Weaver, Jour. Arnold Arb. 56(1): 110-113. 1975. Type. Vicinity of Posto Surucucus Mission, forest on terra firme, Serra dos Surucucus, 2°42-47'N, 63°33-36'W, Territorio Roraima, Brazil, G. T. Prance et al 10084 (holotype NY, isotypes F, GH, US).
Distribution:Brazil South America| Venezuela South America|