Monographs Details: Merremia macrocalyx (Ruiz & Pav.) O'Donell
Authority: Maguire, Bassett. 1978. The botany of the Guayana Highland--part XI. Mem. New York Bot. Gard. 32: 1-391.
Family:Convolvulaceae
Description:Distribution and Ecology - Distribution. Found in most countries in South America. VENEZUELA. Bolivar. Altiplanicie de Nuria. J. Steyermark 88296 (NY, VEN); NE de la Serrania Pia-sol. J. Steyermark 90687 (NY, VEN).

Discussion:3. Merremia macrocalyx (Ruiz & Pavon) O'DoneU, Lilloa 6: 506. 1941. M. glabra (Aublet) H. Hall., Bot. Jahrb. Syst. 16: 552. 1893. Ipomoea hostmanni Meisn. in Mart., Fl. Bras. 7: 290. 1869. Type. Peru. Ruiz & Pavon (isotypes F, US).
Distribution:Venezuela South America|