Flora of North America species comparison

stipules subulate to narrowly triangular, 3–14 mm;

petiole below inflorescence 1/2–1 1/2 blade, fine, curved hairs absent or obscured adaxially;

blade broadly to transversely ovate, 3–7-lobed, 6–20 × 6.5–22.5 cm below inflorescence, base deeply to shallowly cordate, lobes broadly triangular, margins subentire to coarsely crenate-dentate, apex broadly obtuse to long-acuminate, surfaces variably stellate-hairy, sometimes minutely so, nectary absent.

solitary flowers, in axils of distal leaves or appearing subcorymbose by reduction of internodes and subtending leaves.

obscurely to conspicuously jointed distally, 2–12 cm, stellate- and glandular-hairy;

involucellar bractlets (6 or)7–11(or 12), often deciduous after anthesis, linear-subulate to narrowly triangular, 0.8–2.2 cm, margins not ciliate, stellate- and glandular-hairy Flowers horizontal or ascending, sometimes double;

calyx divided 1/2–2/3 length, campanulate, 1.6–4 cm, lobes triangular, apices acute to acuminate, stellate- and glandular-hairy, nectaries absent;

corolla broadly campanulate to rotate, petals usually opening white, changing to deep pink over course of day, rarely pink and unchanging, often with deep pink spot near base, ± obovate, (2.5–)4–7.5 × 1.2–7.5 cm, apical margins repand, usually undulate, finely hairy abaxially where exposed in bud;

staminal column straight, white to pink, 1.4–2.6 cm, bearing filaments nearly throughout, free portions of filaments not secund, 2.5–5 mm;

pollen cream to yellowish orange;

styles white to pink, 3–16 mm;

stigmas pink or yellow, rarely white.

brown, broadly ovoid or globose, 1–2.5 cm, apex impressed, strigose.

olivaceous to reddish brown or dark brown, reniform-ovoid, 2–2.8 mm, laterally glabrous, dorsally and dorsolaterally bearing long, straight, light brown to white, simple or 2- or 3-armed hairs.

= 84, 88, 92, 100, 110, 120 (all cultivars).