Distinguishing Features: Shaggy bark, usually only 5 leaflets, thick nut husk splits
- Type: Deciduous
- Form at maturity: Typically grows 70-90 feet (infrequently to 120 feet) tall with an irregular, oval-rounded crown.
- Leaf: Medium yellow-green, odd-pinnate, compound leaves, each leaf having 5 (less frequently 7 or 9) finely-toothed, broadly lance-shaped, pointed leaflets. Leaflets range from 3-7 inches long. Leaves turn yellow to golden brown in fall.
- Flower: Monoecious greenish yellow flowers, the male flowers in pendulous catkins (to 3-5 long) and the female flowers in short spikes.
- Bark: Old bark shags into long plates, generally free at the bottom and attached at the center, plates are strongly recurved, gray brown color
- Fruit or Seed: Rounded nut, 1 inch to 1.5 inches in diameter, splits at base when mature