Adenostoma

Adenostoma is a genus of shrubs containing only two species:

Adenostoma fasciculatum — Chamise
Adenostoma sparsifolium — Red shank.
Both species are native to coastal California and Baja California. Adenostoma fasciculatum is also native to California in the Sierra Nevada.[1] They are found in plant communities and sub-ecoregions of the California chaparral and woodlands ecoregion.

Both species in this genus feature stiff, linear leaves arranged alternately or in clusters along stems with shredding bark. Flowers form on a panicle, are cream to white and, as in all members of the rose family, have hypanthia.[1]