United States, Illinois, Fayette, Dean Hills Nature Preserve, Herrick Quadrangle.
T. 8N, R . 2E, Sect. 10
North side of Beck's Creek in wet area in old field. Found growing with: Agrostis gigantea, Juncus tenuis, Ammannia coccinea, Eleocharis obtusa var. detonsa, & Gratiola neglecta.