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Only the leaves of trees we've learned in labs

pawpaw - Asimina triloba - Annonaceae

elderberry - Sambucus canadensis - Caprifoliaceae

white oak - Quercus alba - Fagaceae

swamp white oak - Quercus bicolor - Fagaceae

overcup oak - Quercus lyrata - Fagaceae

bur oak - Quercus macrocarpa - Fagaceae

chinkapin oak - Quercus muehlenbergii - Fagaceae

post oak - Quercus stellata - Fagaceae

yellow-poplar, tulip tree, tulip-poplar - Liriodendron tulipifera - Magnoliaceae

american basswood - Tilia americana - Tiliaceae

american beech - Fagus grandifolia - Fagaceae

scarlet oak - Quercus coccinea - Fagaceae

pin oak - Quercus palustris - Fagaceae

willow oak - Quercus phellos - Fagaceae

northern red oak - Quercus rubra - Fagaceae

shumard oak - Quercus shumardii - Fagaceae

pecan - Carya illinoinensis - Juglandaceae

shellbark hickory - Carya laciniosa - Juglandaceae

shagbark hickory - Carya ovata - Juglandaceae

eastern black walnut - Juglans nigra - Juglandaceae

green ash - Fraxinus pennsylvanica - Oleaceae

sugarberry - Celtis laevigata - Cannabaceae

hackberry - Celtis occidentalis - Cannabaceae

eastern red bud - Cercis canadensis - Fabaceae

kentucky coffeetree - Gymnocladus diocicus - Fabaceae

ginko - Ginkgo biloba - Ginkgoaceae

american sycamore - Platanus occidentalis - Platanaceae

black cherry - Prunus serotina - Rosaceae

black maple - Acer nigrum - Sapindaceae

red maple - Acer rubrum - Sapindaceae

silver maple - Acer saccharinum - Sapindaceae

sugar maple - Acer saccharum - Sapindaceae

eastern hophornbeam, ironwood - Ostrya virginiana - Betulaceae

northern catalpa - Catalpa speciosa - Bignoniaceae

sweetgum - Liquidambar - Hamamelidaceae

mockernut hickory - Carya tomentosa - Juglandaceae

red mulberry - Morus rubra - Moraceae

white ash - Fraxinus americana - Oleaceae

blue ash - Fraxinus quadrangulata - Oleacea

downy serviceberry - Amelanchier arborea - Rosaceae

boxelder - Acer negundo - Sapindaceae

ohio buckeye - Aesculus glabra - Sapindaceae

smooth sumac - Rhus glabra - Anacardiaceae

flowering dogwood - Cornus florida - Cornaceae

black oak - Quercus velutina - Fagaceae

pignut hickory - Carya glabra - Juglandaceae

sassafras - sassafras albidum - Lauraceae

Osage-orange - Maclura pomifera - Moraceae

shortleaf pine - Pinus echinata - Pinaceae

eastern white pine - Pinus strobus - Pinaceae

Virginia pine - Pinus virginiana - Pinaceae

American plum - Prunus americana - Rosaceae

fragrant sumac - Rhus aromatica - Anacardiaceae

eastern wahoo - Euonymus atropurpureus - Celastraceae

persimmon - Diospyros virginiana - Ebenaceae

autumn-olive - Elaegnus umbellata - Elaegnaceae

shingle oak - Quercus imbricaria - Fagaceae

American elm - Ulnus americana - Ulmaceae

red elm - Ulnus rubra - Ulmaceae

grape - Vitis spp. - Vitaceae

river birch - Betula nigra - Betulaceae

honey locust - Gleditsia triacanthos - Fabaceae

black locust - Robinia pseudoacadia - Fabaceae

bitternut hickory - Carya cordiformis - Juglandaceae

spicebush - Lindera benzoin - Lauraceae

eastern cottonwood - Populus deltoides - Salicaceae

black willow - Salix nigra - Salicaceae

Virginia creeper - Parthenocissus quinquefolia - Vitaceae

poison-ivy - Toxicodendron radicans - Anacardiaceae

musclewood - Carpinus caroliniana - Betulaceae

coralberry - Symphoricarpos orbiculatus - Caprifoliaceae

roughleaf dogwood - Cornus drummondii - Cornaceae

gooseberry - Ribes spp. - Grossulariaceae

American bladdernut - Staphylea trifolia - Staphyleaceae

greenbrier - Smilax spp. - Smilacaceae

blackhaw - Viburnum prunifolium - Caprifoliaceae

rusty blackhaw - Viburnum rufidulum - Caprifoliaceae

bush honeysuckle - Lonicera maackii - Caprifoliaceae

burning bush - Euonymus alatus - Celastraceae

wintercreeper - Euonymus fortunei - Celastraceae

eastern red cedar - Juniperus virginiana - Cupressaceae

privet - Ligustrum spp. - Oleaceae

Callery pear - Pyrus calleryana - Rosaceae

multiflora rose - Rosa multiflora - Rosaceae

tree of heaven - Ailanthus altissima - Simaroubaceae