Adeia whitneyi, common name Whitney's bristleweed, is a North American species of shrub in the daisy family. It has been found only in the state of California in the western United States.Calflora taxon report, University of California, Hazardia whitneyi (A. Gray) E. Greene, Whitney's bristleweed Biota of North America Program 2014 county distribution map
Adeia whitneyi is a perennial herb or subshrub up to tall. The plant produces numerous flower heads in a dense, elongated array at the top of the plant. Each head contains 8-10 disc flowers but no ray flowers. The species sometimes grows on serpentine soils.Flora of North America, Hazardia whitneyi (A. Gray) Greene, 1896. Whitney’s bristleweed
The species was first named Haplopappus whitneyi in 1868 by Asa Gray. In 2021 Guy L. Nesom placed the species into the new genus Adeia and elevated its former subspecies discoidea to a distinct species, Adeia discoidea.Nesom, G.L. 2021. Two new North American genera segregated from Hazardia (Asteraceae: Astereae). Phytoneuron 2021-39: 1–36. Published 13 September 2021. ISSN 2153-733X
References
External links Photo of herbarium specimen at Missouri Botanical Garden, collected in California in 1866, isotype of Hazardia whitneyi/Aplopappus whitneyi