[wikipedia] Habitat, Range, Varieties: Stachys rigida, with the common name rough hedgenettle, is a perennial herb native to the western United States. It grows in foothills, mountains, valleys, and coasts at elevations of 14 to 2340 m.[1] S. rigida blooms in May to July.
There are two varieties classified: Stachys rigida var. quercetorum and Stachys rigida var. rigida. Variety quercetorum is only found in California and Oregon. (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/29/2025).
