Collected
15 November 2005.
Arizona, United States
Elevation: 1523m.
Georeference protocol: Lat/lon determined by GPS
Number of plants sampled: 50
Comment: Collected by Bureau of Land Management, USA. Rock cliffs in Prosopis velutina grassland. Associated with Fouquieria splendens, Bouteloua curtipendula, Eragrostis sp, Yucca spp.