| Sagittaria australis (J. G. Sm.) Small |
| Currently Accepted Name: | Sagittaria australis (J. G. Sm.) Small |
| Locality: | United States. Tennessee. DeKalb: 0.4 mi W on TN 141 from jct. TN 96 at Center Hill Dam. |
| Habitat: | Abandoned limestone quarry. Native emergent perennial, locally infrequent; wet Marsh-Meadow Community. Associates: Typha latifolia, Alisma subcordatum, Mimulus alatus, Lycopus virginicus, Epilobium coloratum, Scirpus cyperinus, Juncus effusus var. solutus. |
| Collector: | Ralph L. Thompson, Katrina Rivers Thompson 99-832 |