22 May 2007.
Arizona, United States
Locality: Agua Fria National Monument. Bloody Basin Road. 8.2 Miles from junction with Interstate 17.
Coordinates: 34.2378, -112.0343
(Map it)
Habitat: Wild Habitat
Environment description: Semi-desert grassland. Clay and silt, brown soil.
Number of plants sampled: 100
Associated species: Acacia greggii, Erodium cicutarium, Hordeum pusillum, Opuntia engelmannii, O. whipplei, Pleuraphis mutica, and Prosopis velutina.
Comment: Collectors: Johnson J., Gray M.