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 0.3–1.1 mm thick;

branchlets terete, sparsely arachnoid or glabrous, growing tips not enveloped by unfolding leaves;

tendrils along length of branchlets, persistent, branched, tendrils (or inflorescences) at 3+ consecutive nodes, usually not at all nodes;

nodes not 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 2.5–6 mm;

petiole 1/2 to ± equaling blade;

blade cordate, 10–20 cm, usually 3-shouldered, apex acute to short acuminate, abaxial surface not glaucous, ± densely arachnoid when young, sparsely arachnoid when mature, visible through hairs, adaxial surface usually glabrous.

10–20 cm.

7–13 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 glaucous, globose, 12+ mm diam., skin separating from pulp;

lenticels absent.

= 38, 76.