Collected
31 May 2005.
Arizona, United States
Elevation: 1115m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Tan soil.
Number of plants sampled: 320
Comment: Collected by Bureau of Land Management, USA. Semi-desert grassland. Associated with Juniperus coahuilensis, Quercus turbinella, Prosopis sp., Acacia sp., Mahonia fremontii, Opuntia phaeacantha, Opuntia engelmannii, Gutierrezia sp.