Collected
06 August 2002.
California, United States
Elevation: 15m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Associated with Ambrosia chamissonis, Calamagrostis, blackberry, poison oak, annual grasses, Stachys.
Number of plants sampled: 100
Comment: Collectors: Sander, C. : Chicago Botanic Garden, Illinois, USA. Slope: 0-5% , Soil: Sand ,Area sampled: 100-500 sq.m.