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Key to Menispermaceae
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39826
1 Leaves not peltate, usually cordate (the petiole attached at the leaf margin); stamens 6 or 12; petals 6 or 0. | |
1 Leaves peltate but far off-center (the petiole attached 1-5 mm in from the leaf margin); stamens 4 or 12-36; petals 1, 4, or 6-9. | |