United States, California, Butte, T21N R6E ac sec 30. Big Bend Quad. On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. Elevation ca. 3274 ft.
39.644886 -121.345798 +-894m. WGS84
California State University, Fresno, Herbarium of California State University, Chico, Plants of California, Butte County
Error radius determined using bounded area of Bald Rock