| Equisetum | Equisetum arvense L. | field horsetail | ME | NH | VT | MA | CT | RI |
| Equisetum fluviatile L. | water horsetail | ME | NH | VT | MA | CT | RI | |
| Equisetum hyemale L. | scouringrush horsetail | ME | NH | VT | MA | CT | RI | |
| Equisetum palustre L. | marsh horsetail | ME | NH | VT | MA | CT | ||
| Equisetum pratense Ehrh. | meadow horsetail | ME | NH | VT | MA | CT | ||
| Equisetum scirpoides Michx. | dwarf scouringrush | ME | NH | VT | MA | CT | ||
| Equisetum sylvaticum L. | woodland horsetail | ME | NH | VT | MA | CT | RI | |
| Equisetum variegatum Schleich. ex F. Weber & D.M.H. Mohr | variegated scouringrush | ME | NH | VT | MA | CT |
Last Update: 1/4/97
Name: Ray Phillips
Email: rbphilli@Colby.edu