Related species: Elymus trachycaulus ssp. trachycaulus
Plant Communities: wetland-riparian
Counties: Alameda Alpine Amador Butte Contra Costa Colusa Del Norte El Dorado Fresno Glenn Humboldt Inyo Kern Lake Lassen Los Angeles Madera Marin Mariposa Mendocino Merced Mono Monterey Modoc Napa Nevada Placer Plumas Riverside San Bernardino San Benito Santa Clara San Diego San Luis Obispo San Mateo Shasta Sierra Siskiyou Solano Sonoma Tehama Trinity Tulare Tuolumne Ventura Yolo Yuba