Eurybia 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.

Eurybia glauca is a perennial herb or subshrub up to 70 centimeters (28 inches) tall from a woody rhizome.

[4] However, as of 2023 Plants of the World Online (POWO) accepts the 1995 description by Guy L. Nesom as Eurybia glauca.

[1] Eurybia glauca primarily grows west of the Rocky Mountains in Colorado, northern New Mexico, Arizona, and Utah.