| Specimen ID | 1691707 |
| Group | Plants |
| Genus | Marsilea |
| Species | quadrifolia |
| Common Name | European water-clover |
| State | MI |
| County | Washtenaw |
| Locality | Huron River, Ann Arbor |
| Mapping Accuracy | Accurate |
| HUC8 Name | Huron |
| HUC8 Number | 04100013 |
| HUC10 Name | Portage River-Huron River |
| HUC10 Number | 0410001303 |
| HUC12 Name | Barton Pond-Huron River |
| HUC12 Number | 041000130309 |
| Map | |
| Collection Year | 1961 |
| Year Accuracy | Actual |
| Potential Pathway | dispersed | escaped captivity pond | released aquarium |
| Status | established |
| Comments | EWC has been known to exist in Barton Pond for decades according to herbarium records from 1961, 1967, and 1983. Current (2021) distribution is from Argo Park up river through Barton Pond (~3 river miles) |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
