United States, California, Butte, Sierra Nevada. On SE-facing slopes facing Little Butte Creek above Magalia Reservoir, N of Magalia. [Original Lat./Long. on label is "39 51 N; 121 34 W"]. USGS Quadrangle: Paradise Lake East 1:24,000
39.8725 -121.596944 +-1609m. NAD83
39§ 52m 21s N; 121§ 35m 49s W
725 meters (2378ft)
Large crops at serpentine (Quercus durata)/ non-serpentine (Pseudotsuga) ecotone on SE-facing slope. Shrubs to small trees to 5 meters.