Monographs Details: Eriosorus lasseri Vareschi x
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Pteridaceae
Discussion:

Eriosorus flexuosus var flexuosus × paucifolius. See A. F. Tryon (Contr. Gray Herb. 200: 163-164. 1970).

Type. Cerro Auyan-tepuí, Bolívar, Venezuela, Vareschi & Foldats 4945 (VEN). Distribution. Endemic to the Guayana Highland. Terrestrial. VENEZUELA. Bolívar: Along E branch of headwaters of the Río Tirica, Chimanta Massif, alt 2120 m, Steyermark & Wurdack 789 (NY, VEN, US); Southwest-facing side of Mount Roraima, alt 2255-2620 m, Steyermark 58754 (F, US); N of “El Libertador,” Auyan-tepuí, alt 2050-2300 m, Steyermark 93983 (F, US).