| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Rosaceae | Physocarpus opulifolius var. intermedius | Midwestern Ninebark | Limestone river bluffs, mesic hammocks, streambanks, rock outcrops. | W. NY west to MN and CO, south to SC, FL, AL, and AR; Mexico (COA, NLE, SON). |  |
| Rosaceae | Physocarpus opulifolius var. opulifolius | Eastern Ninebark | Stream banks, riverside thickets and scour prairies, rock outcrops, cliffs, fens, seepage swamps, especially over mafic or calcareous rocks. | QC west to WI, south to SC, TN, and n. IL. |  |
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