Flora of North America species comparison

bark exfoliating in shreds or plates;

nodal diaphragms 3–5 mm thick;

branchlets terete to slightly angled, pubescent, sometimes glabrescent, growing tips not enveloped by unfolding leaves;

tendrils along length of branchlets, persistent, tendrils (or inflorescences) at only 2 consecutive nodes;

nodes not red-banded.

bark exfoliating in shreds;

nodal diaphragms 1.5–3.5 mm thick;

branchlets slightly to distinctly angled, densely hirtellous and/or sparsely to densely arachnoid, to glabrate, growing tips not enveloped by unfolding leaves;

tendrils along length of branchlets, persistent, branched, tendrils (or inflorescences) at only 2 consecutive nodes;

nodes sometimes red-banded.

stipules usually more than 3.5 mm;

petiole ± equaling blade;

blade cordate-ovate to cordate-orbiculate, 12–20 cm, usually 3-shouldered to 3–5-lobed, sometimes deeply so, apex acute to short acuminate, abaxial surface not glaucous, sparsely pubescent to glabrate, visible through hairs, adaxial surface usually glabrous.

stipules 1–3 mm;

petiole ± equaling blade;

blade cordate, 6–20 cm, usually unlobed to 3-shouldered, sometimes 3-lobed, apex acute to acuminate, abaxial surface not glaucous, sparsely to densely arachnoid or glabrous, visible through hairs, veins and vein axils hirtellous, adaxial surface glabrous or hairy.

10–20 cm.

10–25 cm.

bisexual.

functionally unisexual.

usually reddish purple to nearly black, sometimes yellow-green, ± glaucous, oblong to ellipsoid, 8–25 mm diam., skin adhering to pulp;

lenticels absent.

black, slightly or not glaucous, globose, 4–8 mm diam., skin separating from pulp, lenticels absent.

= 38, 76.