| Myriophyllum | Myriophyllum alterniflorum DC. | alternateflower watermilfoil | ME | NH | VT | MA | CT | |
| Myriophyllum farwellii Morong | Farwell's watermilfoil | ME | NH | VT | RI | |||
| Myriophyllum heterophyllum Michx. | twoleaf watermilfoil | ME | NH | VT | MA | CT | RI | |
| Myriophyllum humile (Raf.) Morong | low watermilfoil | ME | NH | VT | MA | CT | RI | |
| Myriophyllum pinnatum (Walt.) B.S.P. | cutleaf watermilfoil | ME | VT | MA | RI | |||
| Myriophyllum sibiricum Komarov | shortspike watermilfoil | ME | NH | VT | MA | CT | ||
| Myriophyllum tenellum Bigelow | slender watermilfoil | ME | NH | VT | MA | CT | RI | |
| Myriophyllum verticillatum L. | whorlleaf watermilfoil | ME | NH | VT | MA | CT | ||
| Proserpinaca | Proserpinaca palustris L. | marsh mermaidweed | ME | NH | VT | MA | CT | RI |
| Proserpinaca pectinata Lam. | combleaf mermaidweed | ME | NH | VT | MA | RI |
Last Update: 1/4/97
Name: Ray Phillips
Email: rbphilli@Colby.edu