1 Leaves 3-lobed to 3-foliolate, no leaves 5-foliolate; trailing juvenile plants with 3-foliolate leaves towards the base and 1-foliolate leaves towards the tip of the shoot; [introduced ornamental, rarely escaped]

1 Leaves (3-) 5-7-foliolate, at least some leaves (on a plant with more than 5 nodes) 5-7-foliolate; trailing juvenile plants with 5-7-foliolate leaves towards the base and 3-foliolate (or rarely one or a few 1-foliolate leaves) towards the tip; [native].

  2 Larger leaves 5-foliolate; leaflets herbaceous in texture when fresh, 4-12 cm long; leaflets < 1.5× as long as wide; [collectively widespread in our area].

    3 Inflorescence with a well-developed (zigzag) central axis, the dichotomous branches very unequal, the inflorescence therefore paniculiform, with a total of 25-200+ flowers; tendrils with mostly 3-8 branches, most or all branches terminating with adhesive disks (though young shoots may not have the disks yet formed); leaves usually dull above, medium green; leaflets sessile, subsessile, or short-petiolulate (usually < 5 mm long); leaflet margins toothed primarily past the widest point, with few and obscure teeth below that point; berries 4-8 mm in diameter; [widespread in our area]

    3 Inflorescence without a well-developed central axis, the dichotomous branches relatively equal, the inflorescence therefore corymbiform, as wide or wider than long, with 2-3 main branches, with a total of 10-60 flowers; tendrils with mostly 3-5 branches, usually none terminating in adhesive disks (though sometimes swollen at the tip); leaves usually glossy above, often dark green; leaflets borne on long petiolules, often > 10 mm long; leaflet margins coarsely and jaggedly toothed, the teeth usually prominent in the lower half of each leaflet as well as the upper half; berries 6-12 mm in diameter; [from e. VA, n. WV northward, but also cultivated and spreading from horticultural use]