United States, California, Contra Costa, Contra Loma Regional Park. In area #8. At the peak of a large hill ca. 560 yds s of main parking lot ca. 800 yds w of Contra Loma Blvd.
37.966944 -121.828611 +-402m. NAD83
37§ 58m 1s N; 121§ 49m 43s W
152 meters
500ft.
At the peak of a large hill. Accompanying species include Wyethia sp., Dodecatheon clevelandii, etc. Soil clay.