Collected
29 May 2008.
Arizona, United States
Environment description: Semidesert Grassland
Number of plants sampled: 1000
Comment: Collectors: Johnson, J., Williams, J. Assoc. sp.:Prosopis velutina:Pleuraphis mutica:Avena fatua:Hordeum pusillum:Erodium cicutarium:Layia glandulosa:Microseris lindleyi:Acacia greggii:Heliomeris longifolia var. annua:Plantago patagonica