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1Lateral ribs of the fruit with thick, corky wings, about as thick as wide in ×-section; lateral ribs and dorsal ribs of the fruit similar in shape and size; [NY northward, also reported as introduced in our area]
1Lateral ribs of the fruit with thin, flat wings, much wider than think in ×-section; lateral ribs of the fruit much wider and pronounced than the dorsal ribs; [collectively widespread].
2 Larger leaflets 3-6 cm long, 1-2.5 cm wide, obtuse at the apex; umbels either densely pubescent or glabrous; ovary and fruit either pubescent or glabrous; [collectively widespread in our area, in dry to mesic habitats].