Size: tree, 40-60' average height at maturity, 30-50' spread
Buds: terminal bud larger than laterals and may be superimposed (if so, the extras will produce catkins)
Leaves: deciduous, alternate, 10-20" long compound with 7-19 oblong-lanceolate acuminate serrate leaflets, each 2-5" long and .75-2.25" wide, dark green and finely pubescent on top, pubescent underside
Twigs: large leaf scars, 3-lobed, upper edge has hairy felt-like margin, chocolate-brown chambered pith
Flowers: monoecious, male catkins and female spikes
Fruit: green, 1.5-2.5", elliptic, pointed at both ends, sticky, contains thick-shelled nut
Bark: whitish ridges, furrows gray-black, yellow under-bark
