Collected
15 September 2003.
Colorado, United States
Elevation: 2791m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Associated with Populus tremuloides, Machaeranthera tanacetifolia, Festuca thurberi, Artemisia tridentata and Gutierezzia sarothrae.
Number of plants sampled: 641
Comment: Collectors: Gjertson, E : SCA; Zimmerman, C : SCA Slope: 15-30% E, Soil: Silt-sand ,Area sampled: 1000-5000 sq.m.