| Specimen ID | 1886817 |
| Group | Plants |
| Genus | Trapa |
| Species | bispinosa |
| Variety | iinumai |
| Common Name | water chestnut |
| State | VA |
| County | Fairfax |
| Locality | Pond at 7502 Thistledown Trail, Fairfax Station |
| Mapping Accuracy | Accurate |
| HUC8 Name | Middle Potomac-Anacostia-Occoquan |
| HUC8 Number | 02070010 |
| HUC10 Name | Occoquan River-Potomac River |
| HUC10 Number | 0207001008 |
| HUC12 Name | Occoquan Reservoir-Occoquan River |
| HUC12 Number | 020700100802 |
| Map | |
| Collection Day | 24 |
| Collection Month | 11 |
| Collection Year | 2025 |
| Year Accuracy | Actual |
| Status | established |
| Reference 1 |
| Ref. Number: | 24369 |
| Author: | Center for Invasive Species and Ecosystem Health. |
| Date: | 2024 |
| Title: | EDDMapS: Early detection and distribution mapping system |
| Publisher: | The University of Georgia |
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| Comments | 50 percent of pond surface was covered with Two-horned Trapa. Initial year 2024. https://www.eddmaps.org/distribution/point.cfm?id=13437984 |
| Record Type | NAS sighting report |
| Earliest Record | locale |
| Verifier | Ian Pfingsten |
| Photo | |
