[explorer.natureserve.org] Taxonomy, Threats, Host Species: The species was originally described in 1921, but was lumped into Cuscuta indecora var. indecora by many subsequent treatments. It was later recognized as a distinct species based on the complete reduction of its infrastaminal scales. The primary threat to this species is logging, or other land management actions, that remove its host tree species. The density of host trees impacts the success of seedlings, which have a short window to make connection with the host tree. Cuscuta jepsonii has two known host species, Ceanothus diversifolius and Ceanothus prostratus. (link added by Mary Ann Machi)

[explorer.natureserve.org] Limited Range: Cuscuta jepsonii is a parasitic plant that occurs in the western United States, where it is known only from California in the Klamath and High North Coast Ranges and Mount Shasta in the High Cascades, south to the Southern Sierra Nevada. (link added by Mary Ann Machi)