Monographs Details: Rhynchospora sanariapensis Steyerm.
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Description:Distribution and Ecology - Distribution. Endemic to Venezuelan Amazonas. VENEZUELA. Amazonas: among rock outcrops below mouth of Río Sanariapo, along Orinoco River, 100 m alt, Steyermark 58346 (F, NY); Laja near left bank of Cano Duquiapo, Río Casiquiare, 2 km above Solano, 100 m alt, Wurdack & Adderley 43381 (NY). See also the type collection from Sanariapo.
Type. Steyermark 58469 (F) from vicinity of Sanariapo, near Río Sanariapo, tributary of Orinoco River, 100 m alt, Amazonas, Venezuela.
This tiny species belongs to the section Tenues, in which it clearly differs from polymorphous R. tenuis in the small obovate achenes that are coarsely rugose and the very depressed style-base.
Distribution:Venezuela South America