| Verbatim Directions to Locality: | roadside depression beside Hwy 1-301 at edge of thicket bordering Mills Creek, 6 mi NNW of Callahan. |
| Township: | 3N |
| Range: | 24E |
| Section: | 36 |
| Sixteenth: | NE |
| Quarter: | NW |
| Habitat: | with Scirpus pendulus, Rhynchospora, and Helenium pinnatifidum in partially shaded moist loam of roadside depression. |
| Local Abundance Observations: | frequent. |
| Non digital information?: | N |