Related species: Cirsium cymosum var. canovirens Cirsium cymosum var. cymosum
Plant Communities: Mixed Evergreen Forest Chaparral Foothill Woodland Yellow Pine Forest
Synonyms: Cirsium triacanthum
Counties: Alameda Alpine Contra Costa Colusa Glenn Humboldt Kern Lake Lassen Merced Mono Modoc Napa Plumas San Benito Santa Clara San Joaquin Shasta Sierra Siskiyou Solano Sonoma Stanislaus Tehama Trinity Tulare Tuolumne Yolo