↑«Genus: Aristolochia L.». Germplasm Resources Information Network. United States Department of Agriculture. 30 de janeiro de 2009. Consultado em 8 de janeiro de 2011
↑USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Base de Datos en Línea]. National Germplasm Resources Laboratory, Beltsville, Maryland. URL: http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?970 (25 agosto 2013)