Pale agoseris (Agoseris glauca)

Abstract

Pale agoseris is widely distributed throughout the western United States and Canada (Table 1). In the US, it occurs in all states west of Colorado and in the Dakotas, Minnesota, and Michigan (Baird 2006). Distributions of the two varieties overlap but variety glauca occurs farther south and variety dasycephala occurs farther north. In the states and provinces where their distributions overlap, variety glauca generally occupies lower elevation sites and variety dasycephala higher elevation sites (Hitchcock and Cronquist 2018). The varieties become difficult to distinguish in the northern part of the species range (e.g., southeastern British Columbia and southwestern Alberta), where populations occur near one another and there are pockets of complete introgression (Baird 2006).

Parent Publication

• Western forbs: Biology, ecology, and use in restoration - Project Overview and Acknowledgements

Citation

Gucker, Corey L.; Shaw, Nancy L. 2023. Pale agoseris (Agoseris glauca). In: Gucker, C.L.; Shaw, N.L., eds. Western forbs: Biology, ecology, and use in restoration. Reno, NV: Great Basin Fire Science Exchange. Online: https://westernforbs.org/species/pale-agoseris-agoseris-glauca/.