Secundum retractationem anni 1996, generi nunc sunt circa quadraginta et quinque species. In studiis vetustioribus, omne genus intra genus Pithecellobium usitate ponebatur.[1]
Barneby, R. C., et J. W. Grimes. 1996. "Silk Tree, Guanacaste, Monkey's Earring: A generic system for the synandrous Mimosaceae of the Americas. Part I. Abarema, Albizia, and Allies." Memoirs of the New York Botanical Garden 74(1):1-292. ISBN 0-89327-395-3.
International Legume Database & Information Service (ILDIS). 2005. Genus Abarema. Version 10.01, November 2005