Related species: Calystegia purpurata ssp. purpurata Calystegia purpurata ssp. saxicola
Plant Communities: Chaparral Northern Coastal Scrub
Counties: Alameda Contra Costa Humboldt Lake Los Angeles Marin Mendocino Monterey Napa Placer Riverside Santa Barbara San Benito Santa Clara Santa Cruz San Francisco San Luis Obispo San Mateo Solano Sonoma Sutter Trinity Ventura Yolo