| Celtis | Celtis occidentalis L. | common hackberry | NH | VT | MA | CT | RI | |
| Ulmus | Ulmus americana L. | American elm | ME | NH | VT | MA | CT | RI |
| Ulmus glabra Huds. | Wych elm | ME | VT | MA | ||||
| Ulmus minor P. Mill. | smoothleaf elm | ME | VT | MA | CT | |||
| Ulmus parvifolia Jacq. | Chinese elm | ME | VT | MA | ||||
| Ulmus pumila L. | Siberian elm | ME | NH | VT | MA | CT | RI | |
| Ulmus rubra Muhl. | slippery elm | ME | NH | VT | MA | CT | RI | |
| Ulmus thomasii Sarg. | rock elm | ME | VT | CT |
Last Update: 1/4/97
Name: Ray Phillips
Email: rbphilli@Colby.edu