University of Minnesota
University of Minnesota
College of Biological Sciences
http://www.cbs.umn.edu/

Hardwood Trees

Acer rubrum (Red Maple) leaf
Quercus macrocarpa (Bur Oak)
Betula papyrifera (Paper Birch)
Populus grandidentata (Big-toothed Aspen)
Tilia americana (Basswood)
Fraxinus nigra (Black Ash)
Acer negundo (Box Elder)
Fraxinus pennsylvanica (Green Ash)
Quercus ellipsoidalis (Pin Oak) leaves and acorns
Ulmus rubra (Red Elm)
Quercus rubra (Red Oak) leaves, acorns and bark
Acer saccharum (Sugar Maple)
Populus tremuloides (Trembling Aspen)
Quercus alba (White Oak)
Betula alleghaniensis (Yellow Birch)