Abies balsamea
Abies lasiocarpa
Acer negundo
Acer pensylvanicum
Acer saccharinum
Acer saccharum
Aesculus glabra
Arbutus menziesii
Arctostaphylos manzanita
Ash:
White Ash (Fraxinus americana)
Aspen:
Quaking Aspen (Populus tremuloides)
Big-Toothed Aspen (Populus grandidentata)
Baldcypress (Taxodium distichum)
Beech:
American Beech (Fagus grandifolia)
Blue Beech (Carpinus caroliniana)
Betula nigra
Betula papyrifera
Birch:
Paper Birch (Betula papyrifera)
River Birch (Betula nigra)
Box Elder (Acer negundo)
Buckeye:
Ohio Buckeye (Aesculus glabra)
Carpinus caroliniana
Carya ovata
Cedar:
Eastern Red Cedar (Juniperus virginiana)
Northern White Cedar (Thuja occidentalis)
Celtis occidentalis
Cercis canadensis
Cornus florida
Cottonwood:
Eastern Cottonwood (Populus deltoides)
Narrowleaf Cottonwood (Populus angustifolia)
Cupressus macrocarpa
Cypress:
Monterey Cypress (Cupressus macrocarpa)
Dogwood:
Flowering Dogwood (Cornus florida)
Douglas-Fir (Pseudotsuga menziesii)
Elm:
American Elm (Ulmus americana)
Slippery Elm (Ulmus rubra)
Eucalyptus (Eucalyptus spp.)
Fagus grandifolia
Fir:
Balsam Fir (Abies balsamea)
Douglas-Fir (Pseudotsuga menziesii)
Subalpine Fir (Abies lasiocarpa)
Fraxinus americana
Gleditsia triacanthos
Hackberry (Celtis occidentalis)
Hemlock:
Eastern Hemlock (Tsuga canadensis)
Hickory:
Shagbark Hickory (Carya ovata)
Holly:
American Holly (Ilex opaca)
Hop Hornbeam (Ostrya virginiana)
Hornbeam (Carpinus caroliniana)
Ilex opaca
Juglans nigra
Juniperus virginiana
Larix laricina
Liquidambar styraciflua
Liriodendron tulipifera
Lithocarpus densiflorus
Locust:
Honey Locust (Gleditsia triacanthos)
Black Locust (Robinia pseudoacacia)
Madrone:
Pacific Madrone (Arbutus menziesii)
Magnolia:
Big-Leaf Magnolia (Magnolia macrophylla)
Manzanita (Arctostaphylos manzanita)
Maple:
Silver Maple (Acer saccharinum)
Striped Maple (Acer pensylvanicum)
Sugar Maple (Acer saccharum)
Oak:
Black Oak (Quercus velutina)
Bur Oak (Quercus macrocarpa)
Chinkapin Oak (Quercus muehlenbergii)
Coast Live Oak (Quercus agrifolia)
Gambel Oak (Quercus gambelii)
Northern Red Oak (Quercus rubra)
Overcup Oak (Quercus lyrata)
Pin Oak (Quercus palustris)
Post Oak (Quercus stellata)
Shingle Oak (Quercus imbricaria)
Tanoak / Tanbark Oak (Lithocarpus densiflorus)
White Oak (Quercus alba)
Willow Oak (Quercus phellos)
Ostrya virginiana
Picea abies
Picea engelmannii
Pine:
Bishop Pine (Pinus muricata)
Eastern White Pine (Pinus strobus)
Jack Pine (Pinus banksiana)
Limber Pine (Pinus flexilis)
Loblolly Pine (Pinus taeda)
Lodgepole Pine (Pinus contorta)
Ponderosa Pine (Pinus ponderosa)
Red Pine (Pinus resinosa)
Pinus banksiana
Pinus contorta
Pinus flexilis
Pinus muricata
Pinus ponderosa
Pinus resinosa
Pinus strobus
Pinus taeda
Plantanus occidentalis
Poplar (see also Cottonwoods and Aspens):
Balsam Poplar (Populus balsamifera)
"Tulip Poplar" (Liriodendron tulipifera)
White Poplar (Populus alba)
"Yellow Poplar" (Liriodendron tulipifera)
Populus alba
Populus angustifolia
Populus balsamifera
Populus deltoides
Populus grandidentata
Populus tremuloides
Pseudotsuga menziesii
Quercus agrifolia
Quercus alba
Quercus gambelii
Quercus imbricaria
Quercus lyrata
Quercus macrocarpa
Quercus muehlenbergii
Quercus palustris
Quercus phellos
Quercus rubra
Quercus stellata
Quercus velutina
Redbud:
Eastern Redbud (Cercis canadensis)
Redwood (Sequoia sempervirens)
Robinia pseudoacacia
Sassafras (Sassafras albidum)
Sequoia sempervirens
Spruce:
Engelmann Spruce (Picea engelmannii)
Norway Spruce (Picea abies)
Sweetgum (Liquidambar styraciflua)
Sycamore (Plantanus occidentalis)
Tamarack
Tanoak
Taxodium distichum
Thuja occidentalis
Tsuga canadensis
Tulip Tree
Ulmus americana
Ulmus rubra
Walnut:
Black Walnut (Juglans nigra)
