Flora of North America species comparison

ribbed, tomentose.

blade ovate to reniform, 9-20 × 8-15 cm, base cordate, sinus depth 1-2 cm, apex obtuse to acute;

surfaces abaxially tomentose;

venation palmate-pinnate.

blade ovate, 7-12 × 3-6 cm, base sagittate to auriculate, sinus depth 0.5-1.2 cm, apex obtuse or rounded;

surfaces abaxially hispid;

venation palmate-pinnate.

on new growth, axillary, solitary flowers;

peduncle not bracteolate, 1-7 cm.

from base of stem, racemes;

peduncle bracteolate, 0.5-0.7 cm;

bracteoles ovate-lanceolate, to 2 mm.

calyx yellow-green, sharply bent;

utricle pendent, globose to cylindric, 0.5-1 × 0.5-0.8 cm;

syrinx absent;

tube bent, cylindric, 1-3 × 0.5 cm;

annulus rugulose;

limb yellow, 3-lobed, lobes triangular, 2 × 2 cm, glabrous;

gynostemium 3-lobed, globose, 3 mm;

anthers 6;

ovary 6-locular, 1-7 cm.

calyx brown-purple, bent;

utricle pendent, pear-shaped to somewhat globose, 0.4-0.5 cm;

syrinx indistinct or absent, oblique;

tube horizontal, funnel-shaped, 5-7 × 1-3 cm;

annulus absent;

limb purplish brown, 3-lobed, lobes 0.4-0.6 × 0.5 cm, glabrous;

gynostemium 3-lobed, globose, 5-10 mm;

anthers 6;

ovary 6-locular, 0.5-0.7 cm.

ellipsoid to cylindric, 6-8 × 4-6 cm, dehiscence basipetal;

valves 3;

septa entire, not attached to valves.

globose, 1.2 × 1-3 cm, dehiscence basipetal;

valves 6;

septa entire, not attached to valves.

flat, triangular, 1 × 1 cm.

rounded, ovate, 0.3 × 0.3 cm.

= 28.

= 28.