| Helianthus angustifolius L. |
| Currently Accepted Name: | Helianthus angustifolius L. |
| Locality: | United States. Kentucky. Madison: Cowbell FRS- No. 2. Reservoir- 7.4 surface areas- a floodwater retarding structure built in 1986- 1.0 mi. Wof US 421-25 and KY 21 at Bighill- 0.3-0.6 mi. S on maintenance road- Berea College Forest- Knobs Section. |
| Habitat: | Western Mesophytic forest. Seasonally dewatered flats (Polygonum-Impatiens-Boehmeria). Associates: Bidens ssp.- Hypericum mutlum- Fimbristylis autumnalis- Lycopus virginicus. Elev. 860'. |