| Onagraceae | |
Circaea canadensis subsp. canadensis
| | | |
| Onagraceae | |
Circaea canadensis var. canadensis
| | | |
| Onagraceae | |
Circaea canadensis subsp. quadrisulcata
| (Maxim.) Boufford | Harvard Pap. Bot. 9(2): 256 | 2005 |
| Onagraceae | |
Circaea canadensis var. rishiriensis
| H. Hara | J. Jap. Bot. 34: 317 | 1959 |
| Onagraceae | |
Circaea canadensis var. virginiana
| Fernald | Rhodora 47(557): 161–163, pl. 896, f. 1–4 | 1945 |