United States, California, Butte, In spring; ca. 15 m s of park road, ca. 150 m w of Salmon Hole parking lot, Upper Bidwell Park, Chico. T22N R02E S10 NW1/4 USGS Quadrangle: Paradise 1:24,000
39.784167 -121.743889 +-402m. NAD83
125 meters (410ft)
Riparian Woodland with Quercus douglasii, Quercus wislizenii, Platanus racemosa, Rhamnus californicus, Vitis californica, Cyperus strigosus. In spring.
Annotation label: Voucher specimen for "Studies in the Reproductive Biology of Mustard Species Occurring in Butte County, California". R.E. Preston; Summer, 1983.