| Locality: | United States. Kentucky. Madison: Cowbell FRS, No.2 Reservoir, 7.4 surface acres, a floodwater retarding structure built in 1986, elevation 860 feet, 1.0 mi W of US 421-25 and Ky 21 at Bighill, 0.3-0.6 mi S on maintenance road, Berea College Forest, Knobs Section |
| Habitat: | Cowbell FRS, No. 2 Reservoir, 7.4 surface acres, a floodwater retaining structure built in 1986. Berea College Forest, Knobs Section, Western Mesophytic forest. Seasonally De-watered Flats [Polygonum-Impatiens-Boehmerial]; infrequent. Associates: Bidens ssp., Hypericum munilum, Fimbristylis autumnalis, Lycopus virginicus |
| Collector: | Ralph L. Thompson, Rudy A. Gelis R-334 |