United States, California, Butte, NW of Bangor in S part of county; 1.3 mile S of junction Grubbs and Dunstone Roads, along latter, roadside. T18N R05E S18
39.415556 -121.456944 +-402m. NAD83
T18N R05E S18; 39§ 24m 56s N; 121§ 27m 25s W
Roadside in savanna of Quercus douglasii and Q. wislizenii; with Lupinus nanus, Silene gallica, Erodium botrys.