Wedgeleaf ceanothus is widely distributed in California, Oregon, and the Baja of Mexico. Wedgeleaf ceanothus is found from the Willamette Valley of west-central Oregon, south to the Rogue Valley and Siskiyou Mountains of southwestern Oregon. Wedgeleaf ceanothus is frequent along the coastal ranges of California, to the Liebre, San Gabriel, San Bernardino, Santa Rosa, and Laguna mountains in southern California. Wedgeleaf ceanothus is also found in the Sierra JuÃ¡rez and San Pedro Martir mountains of Baja [34,55,56,58,78,109]. Varieties of wedgeleaf ceanothus are found along a similar distribution. Buckbrush is commonly found growing throughout wedgeleaf ceanothus distribution in Oregon, California, and Baja while sedgeleaf buckbrush and Monterey ceanothus are confined to areas south of Oregon only.
Plants database provides a distributional map of Wedgeleaf ceanothus and its infrataxa.
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