Collected
03 June 2003.
Arizona, United States
Elevation: 440m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Desert grassland. Associated with Prosopis velutina, Acacia greggii and Calliandra eriophylla.
Number of plants sampled: 200
Comment: Collectors: Rice, K : Desert Botanic Garden; Ahearn, S : Desert Botanic Garden Slope: 15-30% SW, Soil: Clay ,Area sampled: 500-1000 sq.m.