| Special Geographical Unit: | St. Marks National Wildlife Refuge |
| Verbatim Directions to Locality: | St. Marks Nat'l [National] Wildlife Refuge. Along E side Mandalay Rd. |
| Latitude - degree with decimals: | 30.12352 |
| Latitude Direction Flag: | N |
| Longitude - degree with decimals: | 83.97155 |
| Longitude Direction Flag: | W |
| Habitat: | With Zizaniopsis in moist loamy sand bordering swampy wetlands (palm, pond pine, male, etc.). |
| Plant Morphology Observations: | Perigynia nerves impressed; achene stipe 0.7 mm long. |
| Local Abundance Observations: | Frequent. |
| Non digital information?: | N |