13 September 2011.
California, United States
Locality: Along rural Highway 16, Amador County.
Coordinates: 38.4516, -120.9096
(Map it)
Elevation: 196m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Roadside.
Number of plants sampled: 35
Comment: Isolated population of thousands. Very rare sightings along Highway 16-49 between collections #SS109 and #SS110. (Between Rancho Murieta and HWY 49.)
Collector(s):