| Cyperus lancastriensis Porter ex A. Gray |
| Currently Accepted Name: | Cyperus lancastriensis Porter ex A. Gray |
| Locality: | United States. Kentucky. Johnson: Johnson County: Growing off east side of US 23 in front of Paintsville Grocery (Christian Appalachian Project Bldg.) ca. 1.1 miles south of jct. with Ky 1107 and ca. 3.5 miles south of Paintsville. |
| Habitat: | Growing in wet soil of seepage slope. Associates: C. strigosus, C. odoratus, Ludwigia alternifolia, Eupatorium coelestinum, Juncus tenuis, and Panicum dichotomiflorum. |