| Verbatim Directions to Locality: | 6.5 mi (10.5 km) W of DeSoto; along Big River near mouth of Mamoth Creek. Big River near MC. |
| Altitude (in meters): | 170 |
| Latitude - degree: | 38 |
| Latitude - minutes: | 7 |
| Latitude - seconds: | 30 |
| Latitude Direction Flag: | N |
| Longitude - degree: | 90 |
| Longitude - minutes: | 40 |
| Longitude - seconds: | 30 |
| Longitude Direction Flag: | W |
| Township: | 39N |
| Range: | 3E |
| Section: | 11 |
| Habitat: | Sand and gravel bars |
| Plant Morphology Observations: | Large clumped perennial ca. 1 m tall; flowers pinkish-buff, darker towards the ends of the petals. |
| Non digital information?: | N |
