Weber, Anton, ed. (2001). An Introductory Field Guide to the Flowering Plants of the Golfo Dulce Rain Forests Costa Rica: Corcovado National Park and Piedras Blancas National Park ("Regenwald der Österreicher"). Staphia. Vol. 78. Linz: Oberösterreichisches Landesmuseum. p. 215. ISBN3-85474-072-7. ISSN0252-192X.