02 June 1994.
California, United States
Locality: Yolo County. About 9 miles west of Davis on Highway 31, then 1/4 mile on gravel road next to resevoir.
Coordinates: 38.5558, -121.9828
(Map it)
Environment description: Open exposure on a level slope. Disturbed soil.
Number of plants sampled: 200
Comment: Frequent abundance. Introduced species.
Collector(s):