18 August 2009.
Nebraska, United States
Locality: Sides of Sand Creek Road, uphill from a cattle guard with the sign "Entering Unit 37" (Oglala National Grassland Management Unit), N 1/2 of NE 1/4 of Section 28, T33N, R53W, Sioux County.
Coordinates: 42.8103, -103.5731
(Map it)
Elevation: 1236m.
Georeference protocol: Lat/lon determined by GPS
Habitat: Wild Habitat
Environment description: Grassland cattle pasture.
Number of plants sampled: 110
Associated species: Liatris punctata, Melilotus officinalis, and Yucca glauca.
Comment: Population of approximately 1,000. At the time of collection, most plants had shed their ray flowers and the heads were dry.
Collector(s):