Quercus macrocarpa (bur oak)
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- Leaf lobing highly variable, but usually at least one leaf per shoot with a broad, crenately toothed upper blade and a pair of opposing, very deep sinuses; other leaves with 2-3 pairs of deeply cut sinuses
- Leaves finely white-pubescent beneath
- Acorns seated in a massive, deep, conspicuously fringed cup
Sourced from page 225 in "Michigan Trees"
Many come from Steve Baskauf at Vanderbilt University