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..2 Leaves glabrous beneath or sparsely pubescent; inflorescence of a solitary or a few flowers; leaf margins entire to rather irregularly serrate or dentate
..2 Leaves distinctly pubescent beneath; inflorescence a branched cyme, of 12-20 flowers; leaf margin finely and evenly serrulate
....3 Erect herb; leaves with 3-7 leaflets
....3 Climbing or sprawling vine; leaves simple, with 1-9 lobes