Tree Identification

Front 1

pinnately compound, opposite leaves; twigs purplywith glaucousbloom; fruit a double samara

Back 1

Acer negundo (Box elder)

Front 2

2 stipules at the base of the petiole, have pubescent petioles, have more wavymargins and overlapping basal lobes. bark is black and deeply furrowed

Back 2

Acer nigrum (Black Maple)

Front 3

fruits are much larger; in summer has a milky sap; buds are huge and soft-pointed, leaf lobes acuminate, bark tan brown with thin ridges

Back 3

Acer platanoides (Norway maple)

Front 4

Opposite, simple, 5-lobed leaves and deep, acute sinuses; silvery underside. Older bark distinct, very flaky

Back 4

Acer saccarinum (Silver maple)

Front 5

opposite, simple, 5-lobed leaves with rounded sinuses, lobes pointy but without bristle tips; no milky latex; stipules absent.

Back 5

Acer saccharum (Sugar Maple)

Front 6

Alternate pinnately compound leaves with 3-5 leaflets. Exceptionally large buds with imbricate scales. Leaf scars large shield shaped; pith solid; 4-valved fruits; bark with distinctive shaggy appearance

Back 6

Carya ovata (Shagbark hickory)

Front 7

Alternate pinnately compound leaves with 5-7 leaflets. Buds naked and densely covered with yellow resin. Leaf scars large shield shaped; pith solid; 4-valved fruits, nut extremely bitter; bark smooth.

Back 7

Carya cordiformus (Bitternut Hickory)

Front 8

A large shrub or small tree occasionally reach ing30 feet tall; often horizontal with the ground and developing a flat-topped crown – giving a distinctly layered to the plant. Leaves alternate, simple, oval to ovate with arcuate venation. Leaves tend to cluster near branch tips so they may appear whorled or opposite, margins entire though somewhat wavy. Twigs slender, red to dark purple, with ovoid terminal buds with two or three scales showing.

Back 8

Cornus alternafolia (Pagoda dogwood)

Front 9

Shrub with simple, opposite leaves and smooth margins, lateral veins that curve parallel to the leaf margin, 4 to 8 cm long, pointed tips and tapered bases

Back 9

Cornus racemosa (Gray Dogwood)

Front 10

Strongly clonal multi-stemmed shrub with alternate, ovate, doubly serrate leaves. Flowers in catkins. Fruit a nut encased in a papery husk. Young twigs covered with reddish glandular hairs.

Back 10

Corylus americana (American Hazelnut)

Front 11

Small tree with alternate, simple, obovate, finely serrate leaves. Fruit is a red pome (apple-like). Long, true thorns.

Back 11

Crataegus spp. (Hawthorn)

Front 12

Tall tree with alternate, simple, toothed leaves. Fruit is a small, prickly, nut. Outer branches and twigs are fine and held horizontally. Bark is smooth and gray.

Back 12

Fagus grandifolia (American Beech)

Front 13

Opposite, pinnately compound leaves with typically 5 -7 leaflets. Bark dark grey smooth when young. Fruit a winged samara with wings not extending along seed cavity. Bud scars wrap around lateral buds (U-shaped).

Back 13

Fraxinus americana (American Ash)

Front 14

Opposite compound leaves with 7-9 leaflets with serrate margins; lowest leaflets sessile. Conspicuous orange hairs on underside of leaf where leaflets meet the rachis. Buds dark. Leaf scars orbicular. Bark light in color and rather corky, even when young.

Back 14

Fraxinus nigra (Black ash)

Front 15

Opposite, pinnately compound leaves with typically 5 -7 leaflets. Bark deeply furrowed and diamond-patterned. Fruit a winged samara with wings extending along seed cavity, often with notch at tip. Bud scar does not wrap around lateral buds.

Back 15

Fraxinus pennsylvanica (Green ash)

Front 16

Alternate, pinnately compound leaves with 11-17 leaflets with terminal leaflet usually present. Pith chambered, very dark brown. Leaf scars with pubescent “mustache”. Bark light grey, smooth or fissured with broad, flat-topped ash gray ridges. Fruit elongate.

Back 16

Juglans cinerea (Butternut)

Front 17

Alternate, pinnately compound leaves with 13 – 23 leaflets; terminal one often absent. Pith chambered, often light brown. Twigs with glabrous leaf scars, naked buds. Bark rough, brownish, and deeply furrowed. Fruit globose.

Back 17

Juglans nigra (Black walnut)

Front 18

Shrub. Opposite, simple, egg shaped leaves with entire margins. Typically many stems sprouting from base. Bark tan and very shreddy. Pith hollow. Fruit a berry, often borne in fused pairs

Back 18

Lonicera x bella (Honeysuckle)

Front 19

Large, multi-stemmed shrub with opposite, simple leaves and entire margins. Leaves are dark green, shiny and with an elongated oval shape.

Back 19

Ligustrum vulgare (Common privet)

Front 20

Alternate, coarsely toothed simple leaves; often unevenly lobed on new shoots. Sap milky. Barky thin and distinctly orange tinged

Back 20

Morus alba (White mulberry)

Front 21

Small tree with doubly serrate, alternate leaves. Bark light brown, thin, finely rectangular and shredding. Seed incased in an inflated sac, borne in clusters that closely resemble hops. Buds with longitudinal striation on scales

Back 21

Ostrya virginiana (Hop hornbeam)

Front 22

Small tree with 2 short needles per fascicle. Cones small, many staying closed for extended periods on the tree.

Back 22

Pinus banksiana (Jack pine)

Front 23

Ovate, alternate simple leaves with serrate margins and flattened petioles. Buds shiny brown often small, sickle shaped small and never sticky/gummy. Bark is light and smooth, often green tinged.

Back 23

Populus deltoides (Eastern Cottonwood)

Front 24

Oval, alternate simple leaves with widely toothed margins and flattened petioles. Buds tiny, naked and often covered with dense whitish covering (as are young twigs & leaves). Bark is thin and smooth for most of its length, turning a distinctive orange hue when exposed to sunlit (often seen in upper reaches of bole or in branches).

Back 24

Populus grandidenta (big-tooth aspen)

Front 25

Ovate, alternate simple leaves with serrate margins and flattened petioles. Buds shiny brown often small, sickle shaped small and never sticky/gummy. Bark is light and smooth, often green tinged.

Back 25

Populus tremuloides (big toothed aspen)

Front 26

Leaves alternate, simple with sharply serrate margins; 1 ½ - 2 times longer than wide, ovate and dull green. Bark dark grey with prominent lenticels and distinctive reticulate pattern when older. Bruised twigs with strong bitter-almond scent.

Back 26

Prunus virginiana (Chokecherry)

Front 27

Leaves alternate, simple with serrate margins; typically three times longer than wide, dark green and shiny with rusty hairs on midvein. Bark dark grey with prominent lenticels and distinctive “potato chip” like bark. Bruised twigs with strong bitter-almond scent.

Back 27

Prunus serotina (Black cherry)

Front 28

Alternate, deeply lobed leaves without bristle tips. Acorn with long peduncle, cap covering half of nut, pubescent and warty, but without fringe of hairs on margin. Twigs glabrous, often glaucous with relatively large, ovate terminal buds.

Back 28

Quercus alba (Eastern white oak)

Front 29

Alternate simple leaves with many rounded shallow lobes; densely hairy (velvety to touch) on the underside. Acorn on long peduncle. Bark on young stems and branches often papery and peeling

Back 29

Quercus bicolor (Swamp White Oak)

Front 30

Alternate simple leaves with distinct pair of deep sinuses lower on blade; lightly tomentose beneath but not as velvety to touch as Q. bicolor. Twigs tan in color, tomentose with small clustered terminal buds. Acorn cup shaggy with ring of hairs on margin. Bark corky and deeply ridged

Back 30

Quercus macrocarpa (Bur oak)

Front 31

Alternate simple leaves with distinct pair of deep sinuses lower on blade; lightly tomentose beneath but not as velvety to touch as Q. bicolor. Twigs tan in color, tomentose with small clustered terminal buds. Acorn cup shaggy with ring of hairs on margin. Bark corky and deeply ridged

Back 31

Quercus rubra (Red Oak)

Front 32

A small tree. Sub – opposite, simple leaves with serrate margins and arching venation; dark green and shiny. Buds dark. Some twigs have a terminal thorn. Fruit a dark purple berry borne in clusters. Bark dark with prominent lenticels. Grows to small tree.

Back 32

Rhamnus cathartica (Eurasian buckthorn)

Front 33

alternate, pinnately compound leaves with opposite leaflets; petiole base hides buds; raceme of wooly red fruits; twigs not wooly; smooth & conspicuously glaucus

Back 33

Rhus glabra (Smooth sumac)

Front 34

alternate, pinnately compound leaves with opposite leaflets; petiole base hides buds; raceme of wooly red fruits; wooly twigs

Back 34

Rhus typhina (Staghorn sumac)

Front 35

Alternate, pinnately compound leaves with serrate margins. Plant a sprawling shrubby vine, capable of forming thick tangles.

Back 35

Rosa multiflora (Multi-flora rose)

Front 36

Evergreen shrub and small tree. Needles, alternate, linear, spirally arranged but appearing 2-ranked on shaded branches, approximately 1 inch long, dark green and shiny above, tip abruptly pointed, yellow or pale green below with 12-15 rows of stomates

Back 36

Taxus cuspidata (Japanese yew)

Front 37

alternate, simple leaves with serrate margins and oblique bases; fruit is subtended by bract that gives good helicopter action

Back 37

Tilia americana (Basswood)

Front 38

Woody vine, typically growing as small shrub in Wisconsin. Alternate, compound leaves with three leaflets. Buds naked, light tan and densely hairy

Back 38

Toxicododendron radicans (Poison Ivy)

Front 39

Leaves typically alternate, simple, linear leaves. Buds with a single hood-like scale.

Back 39

Salix spp. (Willow)

Front 40

doubly serrate, alternate, simple leaves with oblique base; samara fruit; corky leaf scars. Lf veins not typically forked near margins, bark with alternating red/white layers and rather spongy

Back 40

Ulmus americana (American elm)

Front 41

Doubly serrate, alternate, simple leaves; leaf base oblique; samara fruit; corky leaf scars; . Lf veins typically forked near margins, bark without white layers and relatively brittle

Back 41

Ulmus rubra (Slippery elm)

Front 42

opposite, simple leaves with serrated margins and distinctive valvate buds.

Back 42

Viburnum lentago (Nannyberry)

Front 43

opposite, palmately lobed leaves with obvious stipules and warty growth where the lamina meets the petiole.

Back 43

Viburnum opulus (High-bush cranberry)

Front 44

Woody vine with alternate simple leaves; serrate and shallowly palmately lobed. Tendrils borne opposite of leaves. Pith interrupted at the nodes. Fruit a purple berry. Bark of older vines reddish and conspicuously shredding. Typically climbs outer branches of host plant.

Back 44

Vitis riparia (River Grape)

Front 45

Opposite, simple, 5-lobed leaves and relatively shallow acute sinuses. Older bark distinct, very flaky

Back 45

Acer rubrum (red maple)

Front 46

alternate, simple leaves with relatively deep sinuses and bristle-tipped lobes. Acorn caps with tightly loosely overlaping imbricate scales near the margin. Buds pubescent. Bark thick, blocky in appearance without smooth ridges. Inner bark distinctly orange

Back 46

Quercus veluntina (Black Oak)