Cuscuta umbellata var. dubia Yunck., Illinois Biol. Monogr. 6, nos. 2-3: 43, fig. 9. 1921 = Cuscuta desmouliniana Yunck. From holotype at US: Mexico. Sonora. Near Guaymas, sea beach, 22 Feb 1904, E. Palmer1209.
Cuscuta umbellata var. dubia Yunck., Illinois Biol. Monogr. 6, nos. 2-3: 43, fig. 9. 1921 = Cuscuta desmouliniana Yunck. From holotype at US: Mexico. Sonora. Near Guaymas, sea beach, 22 Feb 1904, E. Palmer1209.