Sparganium eurycarpum Engelm.
Sparganiaceae
| Collection Number | C. Davidson 13806 |
| Collectors | C. Davidson, S. R. Christoph |
| Identified By | C. Davidson, 2018 |
| Source | C. Davidson |
| Date | 08 July 2018 |
| Country | USA |
| state | Idaho |
| county | Benewah |
| Location | Calder-Avery Rd. (+ NF 50), 8.7 km from St. Maries Bridge. Elev. 665 m. |
| Lat/Long | N 47 20 24.9 W 116 32 17.1 |
| Note | Flooded margin of a large pond (Turtle Lake) adjacent to St. Joe River. |