| Locality: | United States. Kentucky. Boone: Florence, first rest stop on I-75 southbound at mile marker 176 at latitude 38°56'19.95 N; longitude 84°38'1.30 W., elevation 296 m. Union Quadrangle. Surrounding the main rest stop building and entranceway. |
| Habitat: | elevation 296 m. Plants growing in brick sidewalk crevices surrounding the main rest stop building and entranceway. Native annual, frequent (100+ plants). Associates: Bryum argenteum, Chamaesyce maculata, Plantago major, Poa annua, Sagina procumbens. |
| Collector: | Ralph L. Thompson, Derick B. Poindexter 07-298 |