| Verbatim Directions to Locality: | bay of Watermelon Pond, 6 mi s. of Newberry |
| Township: | 11S |
| Range: | 17E |
| Section: | 4 |
| Habitat: | forming dense mats in ca. 8 dm. water |
| Plant Morphology Observations: | Open perianths white; stems emergent |
| Local Abundance Observations: | frequent |