19 December 2011.
Arizona, United States
Locality: Just below Santa Catalina Highway, Lower Molino Basin, Santa Catalina Mountains, Pima County.
Coordinates: 32.3344, -110.6932
(Map it)
Elevation: 1316m.
Environment description: Sandy, dry stream bottom in sandy wash below Molino Basin. Gradual slope with a southern aspect. Sandy soil with granite substrate.
Number of plants sampled: 6
Associated species: Mesquite, Opuntia, and Palo Verde.
Comment: Majority of seed collected from one plant.
Collector(s):