| Special Geographical Unit: | National Wildlife Refuge |
| Verbatim Directions to Locality: | St. Vincent Island, National Wildlife Refuge; along N side of Road C, 0.8 mi W of Road 4. |
| Habitat: | With Eleocharis wquisetoides and Pontederin cordata in shallow marsh. |
| Local Abundance Observations: | Locally common. |
| Notes: | Apalachicola River/Bay National Estuarine Sanctuary
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| Non digital information?: | N |