United States, California, Napa, Inner North Coast Ranges. Near top of ridge on northeast side of Pocock Creek along the dirt road from Devilhead Road. NNW-facing slope at edge of road opening and cutbank. T11N R05W S26 SE1/4 of NW1/4 USGS Quadrangle: Jericho Valley
T11N R05W S26 SE1/4 of NW1/4; 38§ 46m 28s N; 122§ 23m W
NNW-facing slope in serpentine chaparral with Quercus durata, Garrya congdonii, and Ceanothus cuneatus. At edge of road opening and cutbank, with diverse herbaceous flora including Galium, Plectritis, Castilleja spp, Calochortus amabilis, Clarkia concinna, Claytonia exigua, and Lomatium marginatum.