Collected
30 July 2003.
Colorado, United States
Elevation: 1439m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Adobe benches and hills. Associated with Opuntia sp., Atriplex confertifolia, Hilaria jamesii, Sarcobatus vermiculatus, Chaetopappa ericoides, Sporobolus cryptandrus and Phacelia sp.
Number of plants sampled: 4222
Comment: Collectors: Dawson, C. : Bureau of Land Management, USA. Slope: 0-5% SE, Soil: Sandy-loam ,Area sampled: >10,000 sq.m.