United States, California, Lake, Open chaparral slopes with woodland on north faces immediately below Indian Valley Reservoir spillway into North Fork Cache Creek tailrace.
39.072222 -122.535278
39§ 4m 20s N; 122§ 32m 7s W
396 meters
1300ft.
Open sunny slope above creek. Annual, flowers white.
Label says: Specimen Courtesy of the Lone Mtn. Institute, O'Brien, Oreg.