Checklist of the plantas of the Guiana Shield (Venezuela : Amazonas, Bolivar, Delta Amacuro ; Guyana, Surinam, French Guina) - Funk, V. (National Museum of Natural History, Dept. of Botany, 2007)
A la cabeza de la portada: Smithsonian Institution
Contributions from the United States National Herbarium v. 55:1-584