Click on the images help you identify a swamp white oak.
Form
Height may reach 65 feet, with a trunk diameter of up to 36 inches. The crown is narrow and rounded, with an open structure. The upper trunk is often fringed with short, drooping branches.
Bark
The bark is thick, deeply and irregularly divided by fissures into broad ridges, and grayish brown in color. Bark on twigs is ragged and often peeling.
Leaf
Leaves are simple, alternate on the stem, 5 to 6 inches long, and often crowded toward the ends of twigs. They are broad at the middle (pear-shaped), wedge-shaped at the base, and wavy and indented along the margins. The upper surface is dark green and shiny, while the underside is grayish and fuzzy. Leaves turn brown in autumn.
Fruit (seed)
The fruit is a nut or acorn about 1 inch long, enclosed for roughly one-third of its length in a thick, narrow cup. Acorns appear in pairs on slender, dark brown stalks 2 to 4 inches long.
Range
Common in river bottoms in the extreme southeastern corner of the state and in the southern part of the Minnesota River Valley. This species requires moist soil, as its name implies. It is moderately shade tolerant and slow growing.
Wood uses
The wood is light brown, hard, strong, tough, and durable. It is used for railway ties, barrels, mine timbers, furniture, flooring, and other interior finish.