03 June 2003.
Arizona, United States
Locality: Ecoregion 23. Sonoran desert.
Coordinates: 34.1522, -112.8664
(Map it)
Elevation: 440m.
Georeference protocol: Lat/lon determined by GPS
Habitat: Wild Habitat
Environment description: Desert grassland.
Number of plants sampled: 500
Associated species: Prosopis velutina, Acacia greggii and Calliandra eriophylla.
Aspect: Southwest;
Slope: 22;
Soil Texture: Clay
Comment: Collectors: Rice, K : Desert Botanic Garden; Ahearn, S : Desert Botanic Garden Slope: 15-30% SW, Soil: Clay ,Area sampled: 500-1000 sq.m.