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Photographer: Michael Clayton
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Family Fagaceae
Quercus macrocarpa Michx.
bur oak
Quercus: Latin for oak
macrocarpa: macros for "large;" carpon for "fruit"
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| Status: | Native |
| Plant: | perennial, deciduous tree to 98' + tall; dark gray brown, flat-ridged or scaly bark often with corky wings |
| Flower: | smooth buds; blooms in spring |
| Fruit: | 1-3 acorns on stout stalks; semi-circular to turban-like cup covering 1/2-7/8 of the nut; light brown to grayish, oval to oblong nut |
| Leaf: | obovate to narrowly elliptic in outline, often fiddle-shaped, bases rounded to pointed, edges lobed and/or toothed with deepest lobes near the base, rounded tip becoming merely toothed, upper side dark dull green, underside light green to whitish |
| Habitat: | moist to wet; bottomlands, prairies, savannas; usually on limestone or calcareous clays |
| (Glossary) |
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