Other Names: Basket Oak; Cow Oak.

 Medium to large tree up to nearly 100 feet tall; trunk diameter up to 6 feet; crown rounded.

 Gray or silvery‑white, scaly.

 Stout, reddish‑brown to gray, smooth or nearly so; leaf scars alternate but crowded near the tip, balf‑round, slightly elevated, with several bundle traces; pith star‑shaped in cross‑section.

 Pointed, finely hairy, reddish‑brown, up to 1/4 inch long.

 Alternate, simple; blades. obovate, pointed at the tip, rounded or tapering to the base, up to 10 inches long and 6 inches broad, coarsely scalloped along the edges, thick, green and sparsely hairy on the upper surface, whitish and densely hairy on the lower surface; leafstalk up to 11/2 inches long, hairy.

 Borne separately but on the same tree, minute, without petals, the Staminate crowded into long, slender catkins, the pistillate few in a cluster.

 Acorns solitary or paired, with or without short stalks, the nut ovoid to ellipsoid, brown, up to 11/2 inches long, enclosed about 1/3 its length by the cup, the cup thick, cup‑shaped, hairy, short‑fringed along the rim.

Habitat:

 Low woods.

 Not currently found in the park  Study tree is along road between main park and Old Homer Park.

 The Swamp Chestnut Oak is distinguished from other coarsely toothed oaks by the densely hairy, whitish lower leaf surfaces and its shortotalked acorns. 

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 Tree species facts from Robert Mohlenbrock , Forest Trees of Illinois , 1996