| Locality: | United States. Kentucky. Boyle: Danville, Griffith's Nursery, 3435 Alum Springs Road, KY 300 between Junction City and Parksville. Elev. 1090 feet, 37.59771 N, 84.83561 W. |
| Habitat: | native perennial/annual occasional among greenhouses. Elev. 1090 feet, 37.59771 N, 84.83561 W. Associates: Acalypha virginica, Cyperus iria, C. squarrosus, eclipta prostrata, Euphorbia maculata, E. nutans, Fatoua villosa, Gallinsoga quadriradiata, Kyllingia gracilliama, Persicaria longiseta, Senecio vulgaris, Setaria pumila. |
| Collector: | Ralph L. Thompson, Katrina Rivers Thompson 15-960 |