California, United States
Locality: Amador County, 3 miles from Highway 88 on Oron Mountain Road, 25 miles southeast of town of Polloch Pines. Headwaters of the north fork of the Cosumnes River. El Doredo National Forest.
Coordinates: 38.6372, -120.2403
(Map it)
Elevation: 2280m.
Environment description: Open exposure with 3% slope. Clay loam soil with poor drainage. Singleton spring, very wet drainage. Granite weathered. Other vegetation: skunk cabbage, lupine, assor
Number of plants sampled: 200
Collector(s):