United States, California, Butte, 100 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls.
39.628611 -121.143611 +-402m. NAD83
39§ 37m 43s N; 121§ 8m 37s W
975 meters
3200ft.
On dry bare dark lava soil, near a small seep. Abundant. Flowers dark red-purple. Yellow Pine Forest.