Related species: Galium trifidum ssp. subbiflorum Galium trifidum ssp. columbianum
Plant Communities: Yellow Pine Forest Red Fir Forest Lodgepole Forest Subalpine Forest Foothill Woodland Chaparral Valley Grassland Alpine Fell-fields wetland-riparian
Counties: Alameda Alpine Amador Butte Calaveras Contra Costa Colusa Del Norte El Dorado Fresno Humboldt Kings Lake Lassen Los Angeles Madera Marin Mariposa Mendocino Merced Mono Monterey Modoc Nevada Orange Placer Plumas Riverside Sacramento San Bernardino San Benito Santa Cruz San Francisco San Joaquin San Luis Obispo San Mateo Shasta Sierra Siskiyou Solano Sonoma Tehama Trinity Tulare Tuolumne Yuba