|TITLE (opens new window) ||DESCRIPTION
||Coefficient of Conservatism = 0
Wetland Indicator = FACW-
|WIS DNR-Bureau of Endangered Resources
||Detailed information on Wisconsin invasive species including decription, habitats, control methods
|USDA Plants Database
||Federal Distribution and detailed information including photos
|University of Wisconsin - Green Bay: Trees
||Photos, descriptions, information
|USGS - Northern Prairie Wildlife Research Center
||Wetland Plants and Plant Communities of Minnesota and Wisconsin
|USDA Agricultural Research Service (ARS)
||Images of seeds, fruits, embryos, etc.
|USDA Forest Service, Forest Products Laboratory
||Technology Transfer fact sheet - description of wood attributes, etc.
|Virginia Tech Dept. of Forestry, College of Natural Resources
||detailed description and photographs
|Southwest School of Botanical Medicine
||Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"