NatureServe:
Bark of American Sycamore Tree
NatureServe:
American sycamore in early spring
NatureServe:
American Sycamore Leaves
NatureServe:
River birch bark
NatureServe:
River birch bark
NatureServe:
River birch
NatureServe:
Green ash
NatureServe:
Box-elder
NatureServe:
Box-elder
NatureServe:
Tuliptree / Tulip poplar
NatureServe:
Tuliptree / Tulip poplar
NatureServe:
Tuliptree with drill marks
NatureServe:
Stream habitat
NatureServe:
Black walnut
NatureServe:
Black walnut catkins
NatureServe:
Black walnut
NatureServe:
Bitternut hickory leaf bud
NatureServe:
Bitternut hickory trunk
NatureServe:
Silver maple
NatureServe:
Silver maple