United States, California, Yuba, On the north side of the dirt road, northwest of the bridge across Indian Creek, about 3 miles (air) east of Challenge. T19N R07E S21 SE1/4
39.485278 -121.190278 +-402m. NAD83
T19N R07E S21 SE1/4; 39§ 29m 7s N; 121§ 11m 25s W
762 meters
2500ft.
Yellow Pine Forest. Normal size plants, on dry red rocky serpentine soil. Common. Flowers white.