| Lycopus americanus Muhl. ex W. P. C. Barton |
| Currently Accepted Name: | Lycopus americanus Muhl. ex W. P. C. Barton |
| Locality: | United States. Kentucky. Clark: 0.9 mi. W of Jct. KY 1924 on KY 418 (Old Athens-Boonesboro Rd.) and 0.2 mi. E of Lisletown (Halls on the River) adjacent to Kentucky River. |
| Habitat: | Abandoned limestone quarry. Associates: Mentha piperita- Scutellaria lateriflora- Juncus effusus- Epilobium coloratum- Galium tinctorium- Mimulus ringers- Helenium autumnale. |