Swamp Chestnut Oak (Quercus michauxii)
Updated January 12th, 2021A white oak of bottomlands in the southeastern coastal plain and Mississippi valley, superficially resembling the chestnut oak.
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A white oak of bottomlands in the southeastern coastal plain and Mississippi valley, superficially resembling the chestnut oak.
A white oak native to North America, preferring soils high in calcium.
A native oak of ridgetops and dry uplands, especially in the Appalachians, named for its resemblance to the American chestnut.
A flat, poorly-drained region on the western shore of Lake Erie, heavily altered by urbanization, draining, and agriculture.
A region surrounding Lake Champlain, near the border of northwestern VT and northeastern NY state, with high biodiversity and abundant agriculture.
A mostly flat shoreline region in Wisconsin and Michigan with reddish, clayey soils and mixed forests.
These plants are often confused due to similarity in leaf shape and occurrence in the same habitat; they are easily distinguished by samaras, flowers, mature tree bark, buds, or the presence/absence of milky sap. Leaf shape can be distinguished, but is best supplemented by other cues. Although there is much overlap in habitat, Norway maple is found on a broader range of sites, including disturbed habitats, whereas sugar maple is more limited to rich, mesic sites.
Water oak and willow oak are sometimes confused, and often occur in the same range and habitats (bottomlands in the southeastern U.S.) and have similar growth habits, bark, and acorns. They are easily distinguished by differences in their leaves, but they also have subtle differences in acorns and bark. Water oak prefers sites slightly better-drained than willow oak, and is also found on a wider range of sites, sometimes occurring on mesic uplands; willow oak is rare on uplands, only occurring locally on poorly-drained sites.
These two species are sometimes confused where their ranges overlap, due to similar leaf shape, bark, and acorns. They can be distinguished by close examination of the leaves, acorn cap scales, and buds. Swamp Chestnut oak is usually limited to acidic soils and moister habitats, and ranges farther south, whereas Chinquapin oak prefers calcium-rich soils that are less acidic, can grow on much drier sites, and ranges much farther north and west.