Flora of North America species comparison

bark exfoliating in shreds;

nodal diaphragms to 0.5 mm thick;

branchlets terete, glabrous or sparsely hirtellous, growing tips 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 1.5–3.5 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 3–5 mm;

petiole 1/2 to ± equaling blade;

blade cordate, 6–20 cm, 3-shouldered to shallowly 3-lobed, apex short acuminate, abaxial surface not glaucous, glabrate, visible through hairs, veins and vein axils hirtellous, adaxial surface 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.

(4–)9–12 cm.

10–25 cm.

functionally unisexual.

functionally unisexual.

black, heavily glaucous, globose, 8–12 mm diam., skin separating from pulp;

lenticels absent.

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

= 38.