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Key to Urena
Malvaceae
Urena
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40761
1 Leaves unlobed or shallowly palmately lobed, the sinuses extending < 1/4 of the way from the leaf margin to the leaf base
1 Leaves deeply 3-5 palmately lobed, the sinuses extending > 1/2 if the way from the leaf margin to the leaf base