Cuscuta brachycalyx (Yunck.) Yunck.

Native to:

California, Oregon

POWO follows these authorities in accepting this name:

• Costea, M. & S. Stefanovic (2009). Molecular phylogeny of the Cuscuta californica complex (Convolvulaceae) and a new species from New Mexico and Trans-Pecos. Systematic Botany 34: 570-579.
• Costea, M. in Costea, Mihai (2011-Sept-30). Cuscuta names missing. personal communication (email) 30 Sept. 2011: "Cuscuta names missing".
• Flora of North America Editorial Committee (2023). Flora of North America North of Mexico 14: 1-505. Oxford University Press, New York, Oxford.
• 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.
• Yuncker, T.G. (1932). The genus Cuscuta. Memoirs of the Torrey Botanical Club 18: 113-331. New York Botanical Garden.

An alternative taxonomy had been proposed by the following authorities:

• Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne. [Cited as Cuscuta californica var. breviflora.]
• Walter, K.S. & Gillett, H.J. (1998). 1997 IUCN Red List of Threatened Plants: 1-865. IUCN. [Cited as Cuscuta californica var. breviflora.]

Kew Backbone Distributions

• Costea, M. & S. Stefanovic (2009). Molecular phylogeny of the Cuscuta californica complex (Convolvulaceae) and a new species from New Mexico and Trans-Pecos. Systematic Botany 34: 570-579.