Flora of North America species comparison

erect, terete when young, minutely tomentulose.

erect, prominently 3-sulcate when young, minutely puberulent, usually viscid (especially in inflorescence).

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 subulate, 2–4 mm;

petiole usually shorter than blade;

blade slightly discolorous, ovate, 6–11 cm, longer than wide, base cordate, margins crenulate-serrulate, apex acuminate, surfaces tomentulose, obscured by pubescence.

solitary flowers or in open panicles.

terminal, open panicles.

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 3–4 mm, lobes not overlapping, erect in fruit, lanceolate-ovate;

corolla sometimes reflexed, yellow, often with dark red center, petals 4–6 mm;

staminal column glabrous;

style 5-branched.

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

3 per mericarp, 2 mm, minutely pubescent.

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

mericarps: apex acute or apiculate, surface tomentulose.

subcylindric, usually medially constricted, 6–8 × 5–8 mm;

mericarps: apex apiculate, minutely puberulent.

= 14.

= 14.