Gepubliceerd in: Pfeifer, H.W. (1962). Status of the name Aristolochia durior Hill., Baileya10: 5-7; zie ook: Pfeifer, W.H. (1966). Revision of the North and Central American hexandrous species of Aristolochia (Aristolochiaceae). Annals of the Missouri Botanical Garden53(2): 186: Excluded species.