United States, California, Butte, On serpentine on Rocky Ridge, both sides of Ponderosa Way (Rim Rd), 6.1 mi n of Jarbo Gap on Hwy 70. T22N R04E S01 SE1/4 of SE1/4 USGS Quadrangle: Pulga
39.788611 -121.4725 +-3219m. NAD83
T22N R04E S01 SE1/4 of SE1/4; 39§ 47m 19s N; 121§ 28m 21s W
823 meters
2700ft.
On serpentine. With Pteridium aquilinum, Calocedrus decurrens, Arctostaphylos viscida.