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Wisconsin Trees
Wisconsin Trees
71
Environmental Studies
05/05/2012

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Swamp white oak. Very shallow lobes of its leaves, in the long stalks of its fruit, and often in the presence of conspicuously peeling bark on the branches
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Bur Oak. Simple, alternate and lobed leaves. Lobes are blunt, most leaves have a single pair of deep sinuses.
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Sugar Maple
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Red Oak. Leaves are simple and alternate with sharp-pointed, shallow lobes. The smooth bark of twigs begins to split into shiny sections as the trunks grow, until they are thoroughly fissured at maturity.
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Black oak. Leaves are simple and alternate with sharp-pointed lobes
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Sugar Maple
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Sugar Maple
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Silver Maple. Leaves are simple, opposite and lobed and the undersurface may be conspicuously lighter in color than the upper surface.The leaves are the most deeply lobed of any of our maples. Buds are red and black.
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Silver Maple. Leaves are simple, opposite and lobed and the undersurface may be conspicuously lighter in color than the upper surface.The leaves are the most deeply lobed of any of our maples. Buds are red and black.
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Red maple. Leaves are simple, opposite and palmately-lobed. Buds and flowers tend to be red.
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Red maple. Leaves are simple, opposite and palmately-lobed. Buds and flowers tend to be red.
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Norway Maple. Milky white sap and purple (or green with purplish tint) buds (as compared to the clear sap and medium brown buds of the sugar maple). Leaf color can range from dark purple to green.
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Norway Maple. Milky white sap and purple (or green with purplish tint) buds (as compared to the clear sap and medium brown buds of the sugar maple). Leaf color can range from dark purple to green.
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Box Elder. Leaves are compound and opposite and are often composed of 5 (occasionally 7) leaflets.The twigs are usually purplish, or green with at least a tinge of purple and they have a whitish, powder-like covering.
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White Ash. Clearly stalked leaflets with whitened undersides.
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Green Ash. Has opposite, compound leaves with short-stalked leaflets that are not strongly whitened beneath. (Unlike white ash, which has long-stalked leaflets with a whitened underside).
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Black Walnut.
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Black Walnut.
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Kentucky Coffeetree. Leaves are alternate and twice compound.The bark is dark gray and often forms large, curling scales as the trunks mature.
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Kentucky Coffee Tree. Leaves are alternate and twice compound.The bark is dark gray and often forms large, curling scales as the trunks mature.
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Honey Locust. Leaves are alternate and compound and some leaves may be twice-compound. Wild plants usually have thorns, sometimes very large, branched thorns, but the commonest horticultural varieties are thornless.
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Honey Locust. Leaves are alternate and compound and some leaves may be twice-compound. Wild plants usually have thorns, sometimes very large, branched thorns, but the commonest horticultural varieties are thornless.
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Honey Locust. Leaves are alternate and compound and some leaves may be twice-compound. Wild plants usually have thorns, sometimes very large, branched thorns, but the commonest horticultural varieties are thornless.
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Black Locust. Has alternate compound leaves with blunt entire leaflets. Thorns are paired and short and found at each node. White and very aromatic flowers.
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Black Locust. Has alternate compound leaves with blunt entire leaflets. Thorns are paired and short and found at each node. White and very aromatic flowers.
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Black Locust. Has alternate compound leaves with blunt entire leaflets. Thorns are paired and short and found at each node. White and very aromatic flowers.
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River Birch. Leaves are simple, alternate and doubly toothed and they are also usually shallowly and irregularly lobed. The bark of young trunks and branches over about 1 inch in diameter is papery and peeling. Mature trunks become dark gray and rough with deep fissures that usually retain some of the pink coloration (from younger years) in their depths.
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River Birch. Leaves are simple, alternate and doubly toothed and they are also usually shallowly and irregularly lobed. The bark of young trunks and branches over about 1 inch in diameter is papery and peeling. Mature trunks become dark gray and rough with deep fissures that usually retain some of the pink coloration (from younger years) in their depths.
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River Birch. Leaves are simple, alternate and doubly toothed and they are also usually shallowly and irregularly lobed. The bark of young trunks and branches over about 1 inch in diameter is papery and peeling. Mature trunks become dark gray and rough with deep fissures that usually retain some of the pink coloration (from younger years) in their depths.
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White Birch. Leaves are are simple, alternate and doubly-toothed. White, papery, and often peeling bark. Bark on branches and small trunks is not white, but rather a reddish brown.
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White Birch. Leaves are are simple, alternate and doubly-toothed. White, papery, and often peeling bark. Bark on branches and small trunks is not white, but rather a reddish brown.
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Cottonwood. Leaves are simple, alternate, toothed and broadly triangular. Buds are often resinous (sticky). When the trees reach a large size the older bark splits repeatedly and becomes deeply furrowed and dark gray or even blackish.
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Yellow Birch. Leaves are simple, alternate and doubly-toothed. The sap has the smell and taste of wintergreen. Papery, yellowish, often shiny bark,
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Yellow Birch. Leaves are simple, alternate and doubly-toothed. The sap has the smell and taste of wintergreen. Papery, yellowish, often shiny bark,
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Big Toothed Aspen. Easy to identify by the large teeth of the leaves and the buds covered by whitish, downy hairs. The hairs disappear as the leaves mature. The bark of young trunks is similar to the pale greenish white color of other members of this genus. When the trees reach a large size the older bark splits repeatedly and becomes furrowed and dark gray.
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Big Toothed Aspen. Easy to identify by the large teeth of the leaves and the buds covered by whitish, downy hairs. The hairs disappear as the leaves mature. The bark of young trunks is similar to the pale greenish white color of other members of this genus. When the trees reach a large size the older bark splits repeatedly and becomes furrowed and dark gray.
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Quaking aspen. Leaves are simple, alternate and toothed. The bark of young trunks is similar to the pale greenish white color of other members of this genus. When the trees reach a large size the older bark splits repeatedly and becomes furrowed and dark gray, although many stands are cut before they reach this stage. It lacks the whitish hairy buds found on the big toothed aspen.
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Quaking aspen. Leaves are simple, alternate and toothed. The bark of young trunks is similar to the pale greenish white color of other members of this genus. When the trees reach a large size the older bark splits repeatedly and becomes furrowed and dark gray, although many stands are cut before they reach this stage. It lacks the whitish hairy buds found on the big toothed aspen.
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Hackberry. Simple, alternate leaves with three major veins originating at the asymetrical base. Bark is very ridged. Fruit is dark red and cherry-like.
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Hackberry. Simple, alternate leaves with three major veins originating at the asymetrical base. Bark is very ridged. Fruit is dark red and cherry-like.
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Basswood. Leaves are simple, alternate, toothed and heart-shaped with unequal lobes at the base. Bark of young trees is smooth and light grey. It becomes darker and heavily fissured with eggs.
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Little Leaf Linden. Popular ornamental tree not native to Wisconsin. The leaves are alternate and rounded with a triangular point. Produces small, yellow green flowers in clusters of 5-11.
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Little Leaf Linden. Popular ornamental tree not native to Wisconsin. The leaves are alternate and rounded with a triangular point. Produces small, yellow green flowers in clusters of 5-11.
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American Elm. Alternate, simple leaves. The two sides of the leaf base are often asymmetrical. The leaf margins are doubly toothed (each large tooth often has a smaller tooth upon it). Leaves can be variable in shape and size.
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American Elm. Alternate, simple leaves. The two sides of the leaf base are often asymmetrical. The leaf margins are doubly toothed (each large tooth often has a smaller tooth upon it). Leaves can be variable in shape and size.
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Siberian Elm. Smaller leaves than American Elm. Leaf bases are symmetrical or nearly so and the leaf margins are singly toothed. Introduced/non-native species.
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Siberian Elm. Smaller leaves than American Elm. Leaf bases are symmetrical or nearly so and the leaf margins are singly toothed. Introduced/non-native species.
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Ironwood. Leaves are simple, alternate and doubly-toothed. It is smaller than many other trees and usually does not reach the canopy.
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Catalpa. Leaves are large and heart-shaped, simple and opposite or sometimes whorled.
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Catalpa. Leaves are large and heart-shaped, simple and opposite or sometimes whorled.
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Black Cherry. Simple leaves with toothed margins. Leaf shape and size are variable, but the leaves have a very conspicuous band of brownish hairs along the midrib on the lower surface. The bark is dark gray or blackish and has a distinctive curling pattern of the plates formed between fissures.
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Black Cherry. Simple leaves with toothed margins. Leaf shape and size are variable, but the leaves have a very conspicuous band of brownish hairs along the midrib on the lower surface. The bark is dark gray or blackish and has a distinctive curling pattern of the plates formed between fissures.
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Redbud. Small tree with simple, alternate and entire leaves. The leaves are dark green and heart shaped (nearly equal in width and length). Flowers are bright pink. Primarily an ornamental tree.
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Redbud. Small tree with simple, alternate and entire leaves. The leaves are dark green and heart shaped (nearly equal in width and length). Flowers are bright pink. Primarily an ornamental tree.
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Shagbark Hickory. Leaves are compound and alternate, usually with 5 leaflets, (but some leaves may have 7 leaflets). The shaggy bark of mature trees is unmistakable.
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Shagbark Hickory. Leaves are compound and alternate, usually with 5 leaflets, (but some leaves may have 7 leaflets). The shaggy bark of mature trees is unmistakable.
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European mountain ash. Small tree with compound, alternate leaves and hairy winter buds. The small white flowers are born in much-branched inflorescences and the fruits are red.
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European mountain ash. Small tree with compound, alternate leaves and hairy winter buds. The small white flowers are born in much-branched inflorescences and the fruits are red.
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European mountain ash. Small tree with compound, alternate leaves and hairy winter buds. The small white flowers are born in much-branched inflorescences and the fruits are red.
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Sycamore. Leaves are simple, alternate, as wide or wider than long and palmately lobed with three strong veins from near the base. Bark on large trunks peels irregularly to produce a striking pattern of dark-colored outer and light-colored inner bark.
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Sycamore. Leaves are simple, alternate, as wide or wider than long and palmately lobed with three strong veins from near the base. Bark on large trunks peels irregularly to produce a striking pattern of dark-colored outer and light-colored inner bark.
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Mulberry. Invasive species. The simple, alternate, toothed leaves are extremely variable in shape, ranging from unlobed to heavily lobed, even on the same branch. Regardless of the degree of lobing, the leaves always have three strong veins from the base (one on either side of the midvein) and the sap is milky colored rather than clear
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Buckthorn. Leaves are simple and finely toothed and may be arranged both alternately and oppositely on the same branch. Small thorns at the tips of most branches. Dark colored, small, berry-like fruits.
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Buckthorn. Leaves are simple and finely toothed and may be arranged both alternately and oppositely on the same branch. Small thorns at the tips of most branches. Dark colored, small, berry-like fruits.
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Buckthorn. Leaves are simple and finely toothed and may be arranged both alternately and oppositely on the same branch. Small thorns at the tips of most branches. Dark colored, small, berry-like fruits.
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White pine. The only gymnosperm in Wisconsin with needles arranged in fascicles of 5. Trunks have the potential to be up to one meter in diameter.
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White pine. The only gymnosperm in Wisconsin with needles arranged in fascicles of 5. Trunks have the potential to be up to one meter in diameter.
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Austrian Pine. Needles longer than 10 cm in fascicles of two. Strictly a horticultural tree of yards and streets
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Austrian Pine. Needles longer than 10 cm in fascicles of two. Strictly a horticultural tree of yards and streets
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Norway Spruce. Sharp pointed needles, nearly square in cross-section (not strongly flattened) and attached to the twigs by sterigmata. The terminal branches of mature trees often hang down giving them a distinctive appearance.
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Norway Spruce. Sharp pointed needles, nearly square in cross-section (not strongly flattened) and attached to the twigs by sterigmata. The terminal branches of mature trees of Picea abies often hang down giving them a distinctive appearance.