| Verbatim Directions to Locality: | Dog Island: extensive Cladium marsh running northward from the pond at the old corral on the East End. |
| Habitat: | Dog Island: Infrequent in wet muck of extensive Cladium marsh running northward from the pond at the old corral on the East End. |
| Plant Morphology Observations: | Culms soft, triangular below the inflorescence. |
| Local Abundance Observations: | Frequent. |
