| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Penthoraceae | Penthoraceae | Penthorum Family |  | ||
| Penthoraceae | Penthorum | Penthorum, Ditch-stonecrop | | ||
| Penthoraceae | Penthorum sedoides | American Penthorum, Marsh-stonecrop, Ditch-stonecrop | Shores, drawdown areas, moist forests, floodplain forests, moist disturbed areas, ditches. | NB west to MB, south to Panhandle FL and TX; introduced from BC south to OR. | |