| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Berberidaceae | Caulophyllum giganteum | Northern Blue Cohosh | Rich moist forests. | C. giganteum is more northern in distribution than C. thalictroides, ranging from Québec and Ontario south to w. North Carolina, e. Tennessee, c. Kentucky, n. Ohio, and Michigan. |  (c) Ward, Scott G |
| Berberidaceae | Caulophyllum thalictroides | Common Blue Cohosh, Green Vivian | Rich forests. | Nova Scotia, Québec, Ontario, and Manitoba, south to Georgia, Alabama, Arkansas, and Oklahoma. |  (c) Fleming, Gary P. |