| PINACEAE |
| Eastern hemlock |
Tsuga canadensis |
| Shortleaf pine |
Pinus echinata |
1938 |
| Pitch pine |
Pinus rigida |
1936 |
| White pine |
Pinus strobus |
1937 |
| Loblolly pine |
Pinus taeda |
1937 |
| Virginia pine |
Pinus virginiana |
1937,1961 |
| CUPRESSACEAE |
| Eastern red cedar |
Juniperus virginiana |
1937,1971 |
| MAGNOLIACEAE |
| Sweet bay |
Magnolia virginiana |
1937 |
| Tulip-tree |
Liriodendron tulipifera |
1937 |
| ANNONACEAE |
| Pawpaw |
Asimina triloba |
1942 |
| LAURACEAE |
| Sassafras |
Sassafras albidum |
1937,1941,1944 |
| Spicebush |
Lindera benzoin |
1937 |
| BERBERIDACEAE |
| Japanese barberry |
Berberis thunbergii* |
1941 |
| Hollyleaved barberry |
Mahonia aquifolium |
|
| PLATANACEAE |
| Sycamore |
Platanus occidentalis |
1937 |
| HAMAMELIDACEAE |
| Sweetgum | Liquidambar styraciflua |
1937 |
| Witch-hazel |
Hamamelis virginiana |
1942,1944 |
| ULMACEAE |
| American elm |
Ulmus americana |
1937 |
| Northern hackberry |
Celtis occidentalis |
| MORACEAE |
| Osage orange |
Maclura pomifera |
|
| Paper-mulberry |
Broussonetia papyrifera* |
1944 |
| White mulberry |
Morus alba* |
1944 |
| Red mulberry |
Morus rubra |
1937 |
| JUGLANDACEAE |
| Butternut |
Juglans cinerea |
1937 |
| Black walnut |
Juglans nigra |
1944 |
| Mockernut hickory |
Carya alba |
1941 |
| Bitternut hickory |
Carya cordiformis |
1937 |
| Pignut hickory |
Carya glabra |
1937 |
| Red hickory |
Carya ovalis |
1946 |
| Shagbark hickory |
Carya ovata |
| Sand hickory |
Carya pallida |
|
| MYRICACEAE |
| Northern bayberry |
Morella pensylvanica |
1941 |
| FAGACEAE |
| American beech |
Fagus grandifolia |
1936 |
| Chestnut |
Castanea dentata |
1937 |
| Chinquapin |
Castanea pumila |
1937,1941 |
| White oak |
Quercus alba |
1937,1946 |
| Swamp white oak |
Quercus bicolor |
1947,1942 |
| Scarlet oak |
Quercus coccinea |
1937,1946 |
| Southern red oak |
Quercus falcata |
1937 |
| Bear oak |
Quercus ilicifolia |
1937 |
| Overcup oak |
Quercus lyrata |
1937,1946 |
| Blackjack oak |
Quercus marilandica |
1937 |
| Swamp chestnut oak |
Quercus michauxii |
1937 |
| Willow oak |
Quercus phellos |
1937 |
| Willow oak |
Quercus phellos (hybrid) |
| Pin oak |
Quercus palustris |
1937 |
| Chestnut oak |
Quercus prinus |
1937 |
| Northern red oak |
Quercus rubra |
1937 |
| Post oak |
Quercus stellata |
1937,1942 |
| Black oak |
Quercus velutina |
1937,1946 |
| BETULACEAE |
| American hazelnut |
Corylus americana |
1937,1971 |
| Hornbeam |
Carpinus caroliniana |
1937,1971 |
| River birch |
Betula nigra |
1937,1971 |
| Smooth alder |
Alnus serrulata |
1937,1971 |
| SALICACEAE |
| White poplar |
Populus alba* |
1937 |
| Cottonwood |
Populus deltoides |
1948 |
| Big-toothed aspen |
Populus grandidentata |
1937,1971 |
| European aspen |
Populus tremula* |
1946,1950 |
| White willow |
Salix alba* (prob. var. vitellina) |
1970,1976 |
| Prairie willow |
Salix humilis |
1936,1937 |
| Black willow |
Salix nigra |
1937,1938,1976 |
| Basket willow |
Salix purpurea* |
1970,1971 |
| CLETHRACEAE |
| Sweet pepperbush |
Clethra alnifolia |
1937 |
| ERICACEAE |
| Pink azalea |
Rhododendron periclymenoides |
| Swamp azalea |
Rhododendron viscosum |
1937,1972 |
| Sheep laurel |
Kalmia angustifolia |
1937 |
| Mountain-laurel |
Kalmia latifolia |
1937,1944 |
| Male-berry |
Lyonia ligustrina |
1937,1941 |
| Staggerbush |
Lyonia mariana |
1937,1941 |
| Deciduous swamp fetterbush |
Leucothoe racemosa |
| Wintergreen |
Gaultheria procumbens |
1937 |
| Trailing-arbutus |
Epigaea repens |
1937 |
| Lowbush blueberry |
Vaccinium angustifolium |
1946 |
| Highbush blueberry |
Vaccinium corymbosum |
1936,1937,1941,1942 |
| Cranberry |
Vaccinium macrocarpon |
|
| Hillside blueberry |
Vaccinium pallidum |
| Deerberry |
Vaccinium stamineum |
1937,1940 |
| Black huckleberry |
Gaylussacia baccata |
| Dangleberry |
Gaylussacia frondosa |
1937,1941 |
| PYROLACEAE |
| Spotted wintergreen |
Chimaphila maculata |
1937 |
| Pipsissewa |
Chimaphila umbellata |
1937 |
| EBENACEAE |
| Persimmon |
Diospyros virginiana |
1942 |
| HYDRANGEACEAE |
| Wild hydrangea |
Hydrangea arborescens |
1937 |
| GROSSULARIACEAE |
| Virginia willow |
Itea virginica |
1938 |
| ROSACEAE |
| Meadow-sweet |
Spiraea alba (prob. var. latifolia) |
1937 |
| Hardhack |
Spiraea tomentosa |
1936 |
| Sand blackberry |
Rubus cuneifolius |
1937,1944 |
| Northern dewberry |
Rubus flagellaris |
1937,1942 |
| Highbush blackberry |
Rubus frondosus |
1942 |
| Swamp dewberry |
Rubus hispidus |
1937 |
| Dewberry |
Rubus invisus |
| Highbush blackberry |
Rubus laudatus |
1942 |
| Black raspberry |
Rubus occidentalis |
1937 |
| Highbush blackberry |
Rubus pensilvanicus |
1937,1942 |
| Double-flowered bramble |
Rubus rustikanus* |
| Pasture rose |
Rosa carolina |
1938 |
| Multiflora rose |
Rosa multiflora* |
1957,1979 |
| Swamp rose |
Rosa palustris |
1937,1938 |
| American plum |
Prunus americana |
1943 |
| Sweet cherry |
Prunus avium* |
1942 |
| Fire cherry |
Prunus pensylvanica |
1963 |
| Peach |
Prunus persica* |
1944 |
| Black cherry |
Prunus serotina |
1937,1941 |
| Bradford pear |
Pyrus calleryana* (prob. var. bradford) |
|
| Pear |
Pyrus communis* |
1946 |
| Southern crabapple |
Malus angustifolia (prob. var. angustifolia) |
1943,1946 |
| Toringo crabapple |
Malus sieboldii* |
1961 |
| Flowering quince |
Chaenomeles speciosa* |
1947 |
| Red chokeberry |
Aronia arbutifolia |
1937,1944 |
| Black chokeberry |
Aronia melanocarpa |
1940,1944 |
| Purple chokeberry |
Aronia X prunifolia |
1937 |
| Reddish hawthorn |
Crataegus intricata |
1937,1941,1946 |
| Downy serviceberry |
Amelanchier arborea |
| Swamp serviceberry |
Amelanchier canadensis |
| MIMOSACEAE |
| Mimosa |
Albizia julibrissin* |
| FABACEAE |
| Redbud |
Cercis canadensis |
| Black locust |
Robinia pseudoacacia |
1937 |
| Chinese wisteria |
Wisteria sinensis* |
| Kudzu |
Pueraria montana* |
| ELAEAGNACEAE |
| Autumn olive |
Elaeagnus umbellata* |
| LYTHRACEAE |
| Water Willow |
Decodon verticillatus |
| CORNACEAE |
| Silky dogwood |
Cornus amomum |
1937 |
| Flowering dogwood |
Cornus florida |
1937 |
| Blackgum |
Nyssa sylvatica |
1937 |
| CELASTRACEAE |
| Climbing bittersweet |
Celastrus scandens |
| Strawberry-bush |
Euonymus americana |
1937 |
| VISCACEAE |
| Mistletoe |
Phoradendron leucarpum |
1942 |
| AQUIFOLIACEAE |
| Possum-haw |
Ilex decidua |
1944 |
| Smooth winterberry |
Ilex laevigata |
1941,1947 |
| American Holly |
Ilex opaca |
1937,1973 |
| Winterberry |
Ilex verticillata |
1937 |
| RHAMNACEAE |
| New Jersey tea |
Ceanothus americanus |
1937 |
| VITACEAE |
| Grapeleaf ampelopsis |
Ampelopsis brevipedunculata* |
| Virginia creeper |
Parthenocissus quinquefolia |
1937,1945 |
| Summer grape |
Vitis aestivalis |
1937,1945 |
| Fox grape |
Vitis labrusca |
1937,1941 |
| Frost grape |
Vitis vulpina |
1937 |
| STAPHYLEACEAE |
| Bladdernut |
Staphylea trifolia |
1943 |
| ACERACEAE |
| Box-elder |
Acer negundo |
1942 |
| Red maple |
Acer rubrum |
1937 |
| Norway maple |
Acer platanoides* |
| Sycamore maple |
Acer pseudoplatanus* |
1972 |
| Silver maple |
Acer saccharinum |
1937 |
| ANACARDIACEAE |
| Shining sumac |
Rhus copallinum |
1937 |
| Smooth sumac |
Rhus glabra |
1937,1941 |
| Staghorn sumac |
Rhus hirta |
1937 |
| Poison-sumac |
Toxicodendron vernix |
1957 |
| Poison-ivy |
Toxicodendron radicans |
1945 |
| SIMAROUBACEAE |
| Tree of heaven |
Ailanthus altissima* |
1944 |
| ARALIACEAE |
| Devil's Walking Stick |
Aralia spinosa |
| OLEACEAE |
| Border privet |
Ligustrum obtusifolium* |
| California privet |
Ligustrum ovalifolium* |
| Forsythia |
Forsythia X intermedia* |
| Fringe-tree |
Chionanthus virginicus |
1938,1954 |
| White ash |
Fraxinus americana |
1937,1942 |
| Red ash |
Fraxinus pennsylvanica |
1937,1944 |
| BIGNONIACEAE |
| Northern catalpa |
Catalpa speciosa |
1944,1946 |
| Trumpet-creeper |
Campsis radicans |
1937 |
| RUBIACEAE |
| Partridgeberry |
Mitchella repens |
1937 |
| Button bush |
Cephalanthus occidentalis |
1937 |
| CAPRIFOLIACEAE |
| Northern bush-honeysuckle |
Diervilla lonicera |
1977 |
| Japanese honeysuckle |
Lonicera japonica* |
1937,1946 |
| Amur bush-honeysuckle |
Lonicera maackii* |
1953,1979 |
| Honeysuckle sp. |
Lonicera morrowii* |
1979 |
| Trumpet honeysuckle |
Lonicera sempervirens |
1946, |
| Tartarian honeysuckle |
Lonicera tatarica* |
1977 |
| Coralberry, Indian Currant |
Symphoricarpos orbiculatus |
1944 |
| Maple-leaf viburnum |
Viburnum acerifolium |
1937 |
| Arrow-wood |
Viburnum dentatum |
1937,1938,1941,1944,1945,83 |
| Swamp viburnum or Withe-rod |
Viburnum nudum (prob. var. cassinoides) |
1937,1938,1944 |
| Black-haw |
Viburnum prunifolium |
1937,1941 |
| Elderberry |
Sambucus nigra (prob. ssp. canadensis) |
1937 |
| ASTERACEAE |
| Groundsel-tree |
Baccharis halimifolia |
1956 |
| SMILACACEAE |
| White-leaf greenbrier |
Smilax glauca |
1937 |
| Roundleaf greenbrier |
Smilax rotundifolia |
1937,1944,1945 |
| POACEAE |
| Japanese timber bamboo |
Phyllostachys bambusoides* |
|
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