11 September 1989.
Tennessee, United States
Locality: In mesic prairie edge with Nyssa, Sorghastrum, Passiflora, and Euphorbia corollata 2.8 mi N Puryear on W side of US 641 near RR row, Puryear quad. Puryear city, in Henry Cty.
Coordinates: 36.4833, -88.3333
(Map it)
Elevation: 182m.