| Specimen ID | 1715045 |
| Group | Plants |
| Genus | Ludwigia |
| Species | peploides |
| Subspecies | glabrescens |
| Common Name | floating primrose-willow |
| State | NE |
| County | Lancaster |
| Locality | Along 1/2 mile of the east shore of Olive Creek Lake, in Olive Creek State Recreation Area, near Hallam, Nebraska. The species occupies much of the shoreline from the location coordinates above (adjacent to the Area 2 campground), then north 1/2 mile to the dam. |
| Mapping Accuracy | Accurate |
| HUC8 Name | Salt |
| HUC8 Number | 10200203 |
| HUC10 Name | Upper Salt Creek |
| HUC10 Number | 1020020301 |
| HUC12 Name | Olive Creek Lake |
| HUC12 Number | 102002030101 |
| Map | |
| Collection Day | 16 |
| Collection Month | 10 |
| Collection Year | 2023 |
| Year Accuracy | Actual |
| Status | established |
| Comments | On 9/11/22, I found a 15x40 foot patch of this species at the location specified by the coordinates above. I reported the sighting to Nebraska Game and Parks, because they manage this State Recreation Area. I returned on 10/16/23 to find that the species has spread 1/2 mile north to the dam, occupying much of the shoreline. It may also have spread to the west shoreline—I didn’t check. This needs immediate attention before it spreads to the rest of this lake’s shore, downstream from the lake, and/or to other bodies of water via watercraft. |
| Record Type | Personal communication |
| Earliest Record | locale |
| Verifier | Ian Pfingsten |
| Photo | |
