Related species: Alnus incana ssp. tenuifolia
Plant Communities: Yellow Pine Forest Red Fir Forest wetland-riparian
Counties: Alpine Amador Butte Calaveras Colusa Del Norte El Dorado Fresno Glenn Humboldt Lassen Madera Mariposa Mendocino Mono Nevada Placer Plumas San Diego Shasta Sierra Siskiyou Tehama Trinity Tulare Tuolumne Yuba