| Locality: | United States. Kentucky. Clark: Ford Quadrangle, abandoned limestone quarry, 0.9 mi W of jct Ky. 1924 on Ky. 418 (Old Athens-Boonesboro Road), and 0.2 mi E of Lisletown (Halls on the River) adjacent to Kentucky River. |
| Habitat: | Abandoned limestone quarry. Ponded area formed from bulldozing; frequent, free-floating annual. Associates: Typha latifolia, Equisetum arvense, Scirpus atrovirens, Juncus effusus, Alisma subcordatum, Carex lurida, C. frankii. |
| Collector: | Ralph L. Thompson, Chris A. Fleming, Amanda N. Allen 97-569 |