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Quercus macrocarpa  |
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Bur Oak, Mossycup Oak |
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Central and Northeast United States, the Great Plains
and in parts of Canada |
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A large tree with stout, slightly ascending
branches and a broad, open, irregular crown. |
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70-80 feet tall with a similar to slightly
greater spread. |
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Plants are
monoecious. Male flowers are borne in
clustered, pendent catkins: the females are
borne solitary, or in a few flowered spike in
the axils of the new leaves. |
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Leaves are alternate, simple, 4-10 inches long,
lower portion with 2-3 pairs of deep lakes,
upper portion with 5-7 pairs of shallow lobes
the overall shape resembling a violin, dark
green above, downy whitish tomentose beneath. |
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Fall color is yellow-green to yellow. |
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Bark is dark gray, deeply ridged and furrowed.
Stems usually develop corky wings or ridges and
a gnarled appearance. |
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Fruit is an acorn, ¾-1½ inches long,
broadly oval, with a deep cap, conspicuously
fringed on the margin, enclosing the nut ½ or
more. |
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