07 November 1982.
Locality: FALCON VALLEY RANCH, 30KM. NORTH OF TUCSON
Aspect: Flat;
Coll Source: Wild;
Propagule: Seed;
Parentrock: Conglemerate;
Slope: Gently Rolling;
Soil Drainage: Seasonally Dry;
Soil_Texture: Gravel;
Assoc_Species: Prosopis,Eragrostis Lehmanniana;
Rainfall: 350;
Notes: Gravelly Loam Over Clay
07 November 1982.
United States
Collector(s):