Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
115803
| CA | San Francisco | Stowe Lake, Golden Gate Park | 1966 |
18050002
| San Pablo Bay | collected |
235825
| CA | Yolo | waterway at the University of California Arboretum, Davis | 1994 |
18020163
| Lower Sacramento | collected |
235828
| CA | Yolo | waterway at the University of California Arboretum, Davis | 1995 |
18020163
| Lower Sacramento | collected |
115648
| MA | Bristol | Grays Mill Pond on the Rhode Island-Massachusetts border | 1989 |
01090002
| Cape Cod | collected |
115649
| MA | Plymouth | Fresh Pond, Manomet | 1982 |
01090002
| Cape Cod | collected |