Acer nigrum (black maple)
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- Leaves opposite; leaf blades large, with 3 lobes, the side lobes drooping giving a wilted appearance; the sinuses broad and rounded
- Pubescent on the leaf underside and petiole
- Stipules at the base of the petiole
- Bark black, corrugated in long, narrow ridges
Sourced from page 299 in "Michigan Trees"
Many come from Steve Baskauf at Vanderbilt University