Flora of North America species comparison

erect, terete when young, minutely tomentulose.

erect, stellate-tomentose, without simple hairs.

stipules subulate, 3 mm;

petiole ca. 1/2 times as long as blade;

blade concolorous, ovate, to 6 cm, longer than wide, base cordate, margins irregularly serrulate or crenate, apex acute or acuminate, surfaces densely tomentulose, obscured by pubescence.

stipules lanceolate;

petiole subequal to blade;

blade concolorous, broadly ovate to suborbiculate, 8–15 cm, ± as long as wide, base cordate, margins crenulate, apex acuminate, surfaces softly pubescent.

solitary flowers or in open panicles.

usually solitary flowers, sometimes cymose or racemose.

calyx 3–5 mm, lobes not overlapping, spreading or somewhat reflexed in fruit, lanceolate-ovate;

corolla reflexed, yellow or pink with dark red center, petals 4–6 mm;

staminal column pubescent;

style 5-branched.

calyx 10 mm, lobes not overlapping, erect in fruit, ovate;

corolla pale yellow throughout, petals 8–13 mm;

staminal column glabrous;

style 13–15-branched.

3 per mericarp, 2 mm, puberulent but appearing glabrous.

3 per mericarp, 3–4 mm, minutely puberulent.

cask-shaped, not medially constricted, 7–9 × 6 mm;

mericarps: apex acute or apiculate, surface tomentulose.

broadly ovoid, 15 × 20 mm;

mericarps: apex spinose, spines divergent, 3–6 mm, hirsute.

= 14.

= 84.