Key to the Trees of Wisconsin

106. Largest buds longer than 6 mm and long-tapered to a sharp point, usually reddish, often with some long whitish hairs along the margins of bud scales (see photo). In my experience leaves of these two species are more likley to be cordate at the base than the species of the other path, though they may be broadly rounded in some cases. This genus is easy to recognize, but the species are notoriously difficult to distinguish..


107
106. Buds less than 6 mm long and not conspicuously long-pointed, OR buds clearly not red; buds glabrous or pubescent, but pubescence not consisting of long whitish hairs along the scale margins; leaf bases tapering or rounded.

108
 

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