| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 229615 | MI | Mason | Pere Marquette-White Watershed | 1972 | 04060101 | Pere Marquette-White | established |
| 1456558 | MI | Mason | Bass Lake | 1952 | 04060101 | Pere Marquette-White | established |
| 1457561 | MI | Mason | Ludington State Park 44° 02.403' N 86° 29.530' W | 2009 | 04060101 | Pere Marquette-White | unknown |
| 1567879 | MI | Oceana | [No locality description provided] | 2016 | 04060101 | Pere Marquette-White | established |
| 1692158 | MI | Oceana | Pentwater Lake | 2016 | 04060101 | Pere Marquette-White | unknown |
| 1567900 | MI | Oceana | [No locality description provided] | 2016 | 04060101 | Pere Marquette-White | established |
| 1567908 | MI | Oceana | [No locality description provided] | 2016 | 04060101 | Pere Marquette-White | established |
| 1567940 | MI | Oceana | [No locality description provided] | 2016 | 04060101 | Pere Marquette-White | established |
Citation for this information:
U.S. Geological Survey, 2026,
Iris pseudacorus: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 2/21/2026