Monographs Details: Ramatuela crispialata Ducke var. crispialata
Authority: Maguire, Bassett, et al. 1953. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 8 (2): 87-160.

Known from "caatinga ad Igarape Juraxare affl. Rio Vaupes (Amazonas), Brazil," A. Ducke, November 2, 1932 (H.J.B.R. 25024), a later collection from the type station, A. Ducke 221, September 29, 1935, and more recently from El Castillo, Rio Negro, Vaupes, Schultes & Lopez 9298a.