| Verbatim Directions to Locality: | 2 mi drive E of rte 65 along S side of Buck Siding Road. |
| Township: | 7S |
| Range: | 7W |
| Section: | 9 |
| Sixteenth: | SE |
| Quarter: | NW |
| Habitat: | in deep-banked drainage ditch lined with Hypericum fasciculatum. |
| Plant Morphology Observations: | achenes 1.2-1.5 mm long, terminal internode arching. |
| Local Abundance Observations: | locally common. |