United States, California, Butte, Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. T25N R05E S16 SE1/4
40.022778 -121.416944 +-402m. NAD83
T25N R05E S16 SE1/4; 40§ 1m 22s N; 121§ 25m 1s W
1920 meters
6300ft.
Red Fir Forest. Growing with M. guttatus in an opening along a spring-fed drainage through an alder thicket on a rocky slope at the base of metavolcanic outcrops.