| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Brassicaceae | Rorippa palustris ssp. hispida | Marshcress | Moist soils. | NL (Labrador) to AK, south to c. VA (Amelia County), IL, NE, NM, and n. CA. Al-Shehbaz (1988a) considered reports of this taxon in the (deeper) Southeast to be misidentifications of var. fernaldiana. |  |
| Brassicaceae | Rorippa palustris ssp. palustris | Marshcress | Marshes, bogs, seeps. | ME and NB west to SK, south to FL, TX, ID, and n. South America. |  |