Adeia discoidea

Adeia discoidea is a species of flowering plant in the sunflower family, Asteraceae. It is a perennial herb or subshrub native to California and Oregon.

It is native the Northern Coast Ranges and Klamath Ranges of northwestern California and adjacent Oregon, where it grows in open montane conifer forest from 1000 to 2500 meters elevation.

It was first named Haplopappus whitneyi var. discoideus in 1950, and was renamed Hazardia whitneyi var. discoidea in 1979. In 2021 Guy L. Nesom placed Hazardia whitneyi in the new genus Adeia as Adeia whitneyi, and raised var. discoidea to a distinct species as Adeia discoidea.