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Key to Quercus
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40022
1 Most of the leaves on a relatively mature tree entire and unlobed (some species frequently with some leaves on a tree, especially those on young or vigorous growth, that are toothed or shallowly lobed, the teeth or lobes generally few and irregular in size or location); [primarily either “laurel oaks” of section Lobatae or “live oaks” of section Virentes] | |