Quercus palustris
Pin Oak
The name "pin oak" is possibly due to the many small, slender twigs, but may also be from the historical use of the hard wood for pins in wooden building construction
leaves
The leaves are 5-16 cm long and 5-12 cm broad, lobed, with five or seven lobes. Each lobe has 5-7 bristle-tipped teeth. The sinuses are typically u-shaped and extremely deep cut. In fact, there is approximately the same amount of sinus area as actual leaf area. The leaf is mostly hairless, except for a very characteristic tuft of pale orange-brown down on the lower surface where each lobe vein joins the central vein. Overall autumn leaf coloration is generally bronze, though individual leaves may be red for a time. The leaves are deciduous but will usually persist on the tree into winter.
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Bark
flower
fruit
The acorns that develop are roundish, short stalked, 3/8 to 1/2 inches long, and capped with a thin and shallow saucer-like cup. The acorns will take 16 to 18 months to develop from pollination to maturity. When mature the acorn turns light brown to reddish-brown, and will drop from September to November
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