United States, California, Napa, Napa County: Quail Ridge Reserve. SE corner of Lake Berryessa, just W of Monticello Dam. Along West road, between research station and junction with southern part of Frank's road, ca. 0.5 air miles from research station. E (upslope) side of the road.
38.489722 -122.152222 WGS84
38° 29m 23s N; 122° 9m 8s W
259 meters
850ft
Oak woodland to chaparral transition zone.
With Quercus douglasii, Pinus sabiana, Heteromeles, Toxicodendron, and Arctostaphylos Erect herb.