Flora of North America species comparison

bark exfoliating in shreds;

nodal diaphragms 1–2.5 mm thick;

branchlets gray to green or brown, if purplish only on one side, terete, glabrous, growing tips not enveloped by unfolding leaves, glabrous or sparsely hairy;

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

nodes not red-banded.

bark exfoliating in shreds;

nodal diaphragms 1–2.5 mm thick;

branchlets gray to green or brown, if purplish only on one side, terete, sparsely arachnoid or glabrous, growing tips not enveloped by unfolding leaves, sparsely to densely hairy;

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

nodes not red-banded.

stipules 1.5–3 mm;

petiole ± equaling blade;

blade cordate, (5–)9–18 cm, usually unlobed or shallowly 3-lobed, sometimes deeply lobed on ground shoots, apex acute to short acuminate, abaxial surface not glaucous, glabrous, visible, veins and vein axils sometimes hirtellous, adaxial surface usually glabrous, sometimes sparsely hirtellous.

stipules 1.5–3 mm;

petiole 1/2 blade;

blade cordate, 5–8(–10) cm, unlobed or shallowly 3-lobed, apex acute to short acuminate, abaxial surface not glaucous, glabrous or sparsely hirtellous, visible through hairs, adaxial surface usually glabrous.

9–19 cm.

3–7 cm.

functionally unisexual.

functionally unisexual.

black, usually not, sometimes very slightly, glaucous, globose, 8–12 mm diam., skin separating from pulp;

lenticels absent.

black, usually not, sometimes very slightly, glaucous, globose, 8–10 mm diam., skin separating from pulp;

lenticels usually present.

= 38.

= 38.