Adenostoma is a genus of shrubs containing only two species: A. fasciculatum (Commonly known as Chamise), and A. sparsifolium (Red shank). Both are native to coastal California and Baja California, while A. fasciculatum is also native to California's Sierra Nevada mountains.
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.