United States, California, Napa, Napa County: Butts Canyon. Private property owned by Jobst Jesse. Permission for access and collecting granted. Along Butts Canyon/Guenoc Road just NW of Shell Valley Rd turn off. South side of road.
38.695278 -122.446944 NAD83
38° 41m 43s N; 122° 26m 49s W
232 meters
761ft
West-facing slope in serpentine chaparral with Quercus durata. Uncommon herb. | Access Database Number (Deprecated): UCD160737