Locality: | United States. Kentucky. Garrard: Camp Nelson Quarry, 1.7 mi off KY 1845 from junction of US 27 and 1.0 mi WNW of Lambert Methodist Church, 12.2 mi. N of Lancaster. |
Habitat: | An Ordovician limestone quarry, abandoned in 1991. Wet ditch border; native annual, rare. Associates: Carex frankii, Cyperus vulpinoidea, Carex granularis, Cyperus squarrosus. |