''Adeia'' is a genus of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

s in the sunflower family,

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

. It includes two species of perennial herbs native to California and Oregon. *'' Adeia discoidea'' – California and Oregon *'' Adeia whitneyi'' – California The genus was described by Guy L. Nesom in 2021 to include the two varieties of ''Hazardia whitneyi'', ''H. whitneyi'' var. ''whitneyi'' and ''H. whitneyi'' var. ''discoidea'', which Nesom recognized as distinct species. The genus name comes from the Greek word ''adeia'', meaning safety, security, and freedom from fear.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 They differ from species of '' Hazardia'', which are mostly shrubs, in having white bark, ray florets with sterile ovaries (rather than fertile ones), linear to narrowly linear-lanceolate style branch (disc floret) collecting appendages (rather than ovate-triangular ones), and elliptic-oblong to narrowly oblong-obovate and strongly flattened achenes with 8 to 12 nerves (rather than mostly subcylindric to fusiform or narrowly obovoid achenes with 4 to 5 nerves).

References

{{Taxonbar, from=Q126950207 Astereae Asteraceae genera Flora of the Western United States Taxa named by Guy L. Nesom