Collected
09 November 2011.
Missouri, United States
Elevation: 145m.
Environment description: Ditch, along railroad. Associated with Amorpha fruticosa, Carex annectens, C. frankii, C. lupulina, Cicuta maculata var. maculata, and Iris virginica.
Number of plants sampled: 63
Comment: Collected by: Diane Donovan