Additional Collectors: Ralph L. Thompson; F. Dale Noe Jr.
Locality: United States, Kentucky, Pulaski, Bobtown Quadrangle- near Woodstock- 2.2 km east on Ocala Road from jct. with Ky. 39- northwest of Hazeldell Church of Christ
Habitat: In fallow field north of road; frequent. Associates: Hypericum gentianoides- H. perforatum- Ambrosia artemisiifolia- Lobelia inflata- Oenethera laciniata- O. linifolia- Chenopodium album- C. ambrosioides- Anagallus arvensis- Oxalis stricta