Collected
09 September 2005.
Arizona, United States
Elevation: 1849m.
Georeference protocol: Lat/lon determined by GPS
Number of plants sampled: 500
Comment: Collected by Bureau of Land Management, USA. Associated with Ambrosia, Sphaeralcea, Guiterezia, Ephedra, Oenothera, Abronia, Senecio, Yucca, Mentzelia.