United States, California, Butte, E of Oroville, 3.4 mi below L. Wyandotte near L. Oroville.
39.504722 -121.452222 +-8047m. NAD83
39§ 30m 17s N; 121§ 27m 8s W
In ditches and in openings of forest slopes, with Clarkia biloba and Aira caryophyllea; area of Pinus ponderosa, Arbutus menziesii, Quercus chrysolepis, Q. kelloggii, Heteromeles arbutifolia, Diplacus bifidus, Trifolium, Madia and Galium spp.