Cuscuta umbrosa Beyr. ex Hook.

POWO follows these authorities in synonymising this name:

• (2023). https://doi.org/10.1600/036364423X16847773873206. epublication. [Cited as Cuscuta gronovii var. curta.]
• 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 gronovii var. curta.]
• Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne. [Cited as Cuscuta gronovii.]
• Gray, A. in Gray, A. (1878). Convolvulaceae. Synoptical Flora of North America, edit. 1 2(2): 207-224, 394. [Cited as Cuscuta inflexa Engelm., pro parte.]
• Yuncker, T.G. (1932). The genus Cuscuta. Memoirs of the Torrey Botanical Club 18: 113-331. New York Botanical Garden. [Cited as Cuscuta gronovii.]

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

• Ackerfield, J. (2015). Flora of Colorado: 1-818. BRIT Press. [Cited as Cuscuta umbrosa.]
• Allred, K.W. (2012). Flora Neomexicana, ed. 2, 1: 1-599. Range Science Herbarium, Las Cruces, New Mexico. [Cited as Cuscuta umbrosa.]
• Costea, M. in Costea, Mihai (2011-Sept-30). Cuscuta names missing. personal communication (email) 30 Sept. 2011: "Cuscuta names missing". [Cited as Cuscuta umbrosa.]
• Hitchcock, C.L. & A. Cronquist in Hitchcock, C.L. & A. Cronquist (1991). Convolvulaceae. Flora of the Pacific Northwest: 363-366. Univ. Washington Press. [Cited as Cuscuta umbrosa Beyrich.]
• Scoggan, H.J. in Scoggan, H.J. (1979). Convolvulaceae. The Flora of Canada 4: 1253-1257. National Museum of Natural Sciences. [Cited as Cuscuta umbrosa.]

Kew Plants for Health

• "World Checklist of Useful Pl. Spp. (Diazgranados et al., 2020)"