Collected
20 April 2005.
Arizona, United States
Elevation: 902m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Slope: 20-40 degrees. Light tan to orange-tan soil.
Number of plants sampled: 900
Comment: Collected by Bureau of Land Management, USA. Sonoran desert scrub, Arizona upland. Associated with Fouquieria splendens, Simmondsia chinensis, Prosopis sp., Menodora scabra, Opuntia sp., Echinocereus sp., Cylindropuntia sp., Ericameria laricifolia, Calliandra eriophylla.