Locality: | United States. Kentucky. Laurel: Infrequent; gravel bar. Associates: Euphorbia rhomboidea- Polygonum pensylvanicum- P. cespitousm- P. punctatum- Justicia americana- Boehmeria cylindrica- Leersia oryzoides. |
Habitat: | Laurel Couty: Rockcastle River floodplain and gravel bars- ca. 2.2 miles west of US 25 off KY 1329 in Rockcastle County- south bank in Laurel County. |