Sawtooth Oak
![Sawtooth Oak, showing leaves with serrated edges](https://s3.amazonaws.com/assets.centralparknyc.org/media/images/_1000xAUTO_crop_center-center_none/Sawtooth-Oak-Cut.jpg)
The sawtooth oak has a leaf that looks unlike most oak leaves, giving the tree an almost shaggy appearance, which is reinforced by the sawtooth oak's shaggy-topped acorns. These acorns are bitter and eaten by squirrels only as a last resort.
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Leaves
3.5-7.5 inches long, alternate arrangement, simple and oblong; serrated, tooth-like edges -
Fruit
Acorns enclosed in small rosette of irregular leaves (involucre) with spreading and recurved bars -
Flower
Pendulous yellow-green catkins (male), messy, bloom in May -
Bark
Ridged and furrowed, ash brown, smooth grayish stems