Herrickia glauca

Gray Aster

Herrickia glauca (Nutt.) Brouillet  is native to mountains of the Great Basin of Ariz., Colo., Idaho, Mont., N.Mex., Utah, Wyo. (Brouillet 2006, FNA).  It has been treated as Eucephalus glaucus Nutt., Aster glaucus (Nutt.) Torrey & A. Gray; Aster glaucodes S. F. Blake, and Eurybia glauca (Nutt.) G. L. Nesom.  The species is diploid (2n=18).

  • var. glauca  (distal stems, peduncles, and phyllaries non-glandular; Ariz., Colo., Idaho, Mont., N.Mex., Utah, Wyo.)
  • var. pulchra (S. F. Blake) Brouillet (distal stems, peduncles, and phyllaries stalked-glandular; San Juan River basin (Washington and Kane counties, Utah; Coconino County, Arizona)

Brouillet, L.  2006. Herrickia Wooton & Standley. pp. 361--365. In Flora North America Editorial Committee, eds. Flora of North America. Vol. 20. Asteraceae, Part 2. Astereae and Senecioneae. Oxford University Press, New York.

Last revised 11 May 2025 by J.C. Semple

© 2025 J.C. Semple, including all photographs unless otherwise indicated

Herrickia glauca
Herrickia glauca shoot
Herrickia glauca hds BCNP UT
Herrickia glauca head

1-4. Herrickia glauca var. glauca, Bryce Canyon N.P., Utah. 1. Habit. 2. Upper stem and inflorescence. 3. Butterfly visiting florets. 4. Involucre and florets.