Michigan Trees: A Handbook of the Native and Most Important Introduced Species
cc. Leaves not cut by a pair of deep sinuses; branches not
corky-ridged; nut about 3/4 inch long, about one-fourth covered by a thin, tomentose, warty cup. _Q. alba_, p. 101.
aa. Leaves not deeply cut nor lobed.
b. Margin of leaf entire to sinuate-crenate, but not toothed; acorns on stalks 1/2-4 inches long.