United States, California, Plumas, Ca 5.5 air mi NE of Little Grass Valley Reservoir, on ridge just west of Pilot Peak and overlooking upper end of S Fork Feather River. On N side river's crossing of USFS Rd 22N60, NW of the Pacific Crest Trail, at upper end of open band of serpentine which runs in a NW direction from ctr of section. At W edge of band. T22N R10E S08 SE1/4 of NW1/4 USGS Quadrangle: Onion Valley
39.783611 -120.888333 +-402m. NAD83
T22N R10E S08 SE1/4 of NW1/4; 39§ 47m 1s N; 120§ 53m 18s W
1990 meters
6530ft.
On ridge. At upper end of open band of serpentine and small glades within open Red fir forest. At edge of band, in semi-shade, near grassy moist site at flat top of ridge with Silene invisa, Deschampsia elongata, and Achnatherum sp.