Parent species: Perideridia gairdneri
Plant Communities: Chaparral Valley Grassland Mixed Evergreen Forest Freshwater Marsh wetland-riparian
Synonyms: Carum gairdneri
Counties: Contra Costa Del Norte Fresno Humboldt Kern Lake Lassen Marin Mendocino Monterey Modoc Napa Orange San Bernardino San Benito Santa Clara Santa Cruz San Diego San Luis Obispo San Mateo Siskiyou Solano Sonoma Trinity Ventura