California, United States
Locality: Near town of Portola, Sierra Valley. South on A-23, 4-1/2 miles east off Route 70, 2 miles east.
Coordinates: 40.0414, -120.5289
(Map it)
Elevation: 1611m.
Environment description: Open exposure, level flat grasslands. Clay-loam (26% sand, 46% silt, 28% clay). Not well drained. Abundant.
Number of plants sampled: 300
Associated species: Associated vegetation: Poa pratensis, Potentilla gracilis, Perideritia, Sidalcea oxegonia, Junces valticus, Seneciohyto phylloides.
Collector(s):