Epilobium ciliatum ssp. ciliatum
| fringed willowherb | Native, Persisting, S5 (State Rank), G5T5 (Global Rank), CoC: 3 |
Epilobium ciliatum ssp. ciliatum × E. coloratum = E. ×wisconsinense
| Wisconsin hybrid willowherb | Native, SNA (State Rank), GNA (Global Rank) |
Epilobium coloratum
| eastern willowherb | Native, Persisting, S5 (State Rank), G5 (Global Rank), CoC: 2 |
Epilobium hirsutum
| great hairy willowherb | Not Native, Persisting, SNA (State Rank) |
Epilobium hornemannii ssp. hornemannii
| alpine willowherb | Native, Persisting, S1 (State Rank), CoC: 10 |
Epilobium leptophyllum
| narrow-leaved willowherb | Native, Persisting, S5 (State Rank), G5 (Global Rank), CoC: 7 |
Epilobium palustre
| marsh willowherb | Native, Persisting, S4 (State Rank), G5 (Global Rank), CoC: 7 |
Epilobium parviflorum
| small-flowered willowherb | Not Native, Persisting, SNA (State Rank) |
Epilobium strictum
| downy willowherb | Native, Persisting, S5 (State Rank), G5? (Global Rank), CoC: 8 |