| TITLE (opens new window) | DESCRIPTION |
|
| WIS DNR-Bureau of Endangered Resources |
Detailed information on Wisconsin invasive species including decription, habitats, control methods |
| Invasive And Exotic Species of North America |
Descriptions, management issues, warnings, photos, etc. |
| USDA Plants Database |
Federal Distribution and detailed information including photos |
| University of Wisconsin - Green Bay: Trees |
Photos, descriptions, information |
| Virginia Tech Dept. of Forestry, College of Natural Resources |
detailed description and photographs |
| Weeds Gone Wild: Alien Plant Invaders of Natural Areas |
Descriptions, photos, management help, etc. |
| Southwest School of Botanical Medicine |
Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada" |
