| Verbatim Directions to Locality: | in wet mucky loam along shoulder of Dry Creek under Rte 167 bridge. |
| Township: | 3N |
| Range: | 11W |
| Section: | 3 |
| Sixteenth: | SE |
| Quarter: | NE |
| Habitat: | with Saururus in wet mucky loam along shoulder of Dry Creek. |
| Plant Morphology Observations: | Trigonous achenes much wider [that] long. |
| Local Abundance Observations: | Locally common. |