Cuscuta azteca, Costea & Stefanovic = Cuscuta potosina Schaffner ex S. Watson, Proc. Amer. Acad. Arts 18: 124. 1883     var. globifera Schaffner ex Yuncker, Illinois Biol. Monogr. 6: 130. 1921. From holotype at GH:  Mexico, San Luis Potosi, 1877, Schaffner 780 (isotypes: CAS, F, K, NY).