| Verbatim Directions to Locality: | floodplain bordering Sams Cut Off near its departure from East river, ca. 4 air mi NE of town of Apalachicola. |
| Habitat: | in shallow water of wooded floodplain (Nyssa, Acer, Fraxinus,Taxodium). |
| Plant Morphology Observations: | plants rhizomatous, glaucous. |
| Local Abundance Observations: | frequent. |