Cuscuta compacta var. efimbriata Yunck.

POWO follows these authorities in synonymising this name:

• Austin, D.F. (1980). Studies of the Florida Convolvulaceae -- III. Cuscuta. Florida Scientist 43: 294-302. [Cited as Cuscuta compacta.]
• Flora of North America Editorial Committee (2023). Flora of North America North of Mexico 14: 1-505. Oxford University Press, New York, Oxford. [Cited as Cuscuta compacta.]

This name was accepted following an alternative taxonomy by these authorities:

• Kartesz, J.T. in Kartesz, J.T. (1994). Convolvulaceae, Cuscutaceae. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland 1: 217-221-& 227-228. Timber Press. [Cited as Cuscuta compacta var efimbriata.]
• Yuncker, T.G. (1932). The genus Cuscuta. Memoirs of the Torrey Botanical Club 18: 113-331. New York Botanical Garden. [Cited as Cuscuta compacta var. efimbriata.]