United States, California, Glenn, Near Black Diamond Lookout, close to the town of Stonyford. On the top of a ridge system. USGS Quadrangle: Stonyford
39.403889 -122.624722
39§ 24m 14s N; 122§ 37m 29s W
930 meters (3050ft)
This herb was collected from a chaparral or brushland in the general vicinity of a ridge top on a flat exposure as a member of the herb layer in a fruiting state. The population was located on the top of a ridge system that had a smooth vertical slope shape and a smooth horizontal slope shape. It was growing on soil having a gravelly texture composed mainly of serpentine rock with a residual origin.