Herrickia glauca is a North American species of flowering plants in the family Asteraceae, called the gray aster. It is native to the western United States, primarily in Arizona, New Mexico, Utah, Colorado, and Wyoming, with a few populations in Idaho and Montana.[2][3]

Herrickia glauca
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Herrickia
Species:	H. glauca
Binomial name
Herrickia glauca (Nutt.) Brouillet 2004
Synonyms[1]
Synonymy Eucephalus glaucus Nutt. 1840 Aster glaucus (Nutt.) Torr. & A. Gray 1841 not Nees 1818 Eurybia glauca (Nutt.) G.L. Nesom Aster glaucodes S.F.Blake Eucephalus formosus Greene Eurybia pulchra (S.F.Blake) G.L.Nesom

Herrickia glauca is a perennial herb or subshrub up to 70 centimeters (28 inches) tall from a woody rhizome. The plant produces flower heads numerous heads (sometimes over 100) in a flat-topped array. Each head contains 8-19 lavender ray florets surrounding 12-32 yellow or purplish disc florets.[4]

References