Locality: | United States. Kentucky. Clay: Sexton's Creek area, 1.5 miles east on KY 577 from the easternmost junction with KY 1350. |
Habitat: | Margins of cultivated field; frequent. Associates: Cyperus echinatus, Acalypha rhomboidea, Sida spinosa, Conyza canadensis, Andropogon virginicus, Euphorbia nutans, Panicum anceps, Lobelia inflata, Oxalis stricta, Robinia hispida. |
Collector: | J. Richard Abbott, Leslie C. Isaacs 6319 |