Flora of North America species comparison

often glaucous.

stipules caducous, linear-subulate, 2–10 mm;

petiole 1/2 to somewhat exceeding blade;

blade narrowly to broadly ovate or triangular- or lanceolate-ovate, usually hastately 3(–5)-lobed, sometimes unlobed, 6–18 × 3–16 cm, base cordate to truncate, lobes, especially middle one, ovate to triangular, to 3 times as long as wide, margins crenate-serrate to serrate or serrate-dentate, apex acuminate to long-acuminate, surfaces glabrous, nectary absent.

solitary flowers in axils of distal leaves.

jointed distally, 1–10 cm, 1/3 to slightly exceeding subtending petioles;

involucellar bractlets (8 or)9–15(or 16), linear-subulate, 1–3 cm, margins not ciliate.

horizontal;

calyx divided 1/3–1/2 length, broadly cylindric-campanulate, 2.5–3 cm, conspicuously larger in fruit, lobes broadly triangular, apices acute, surfaces glabrous, nectaries absent;

corolla broadly funnelform, petals pink to white, red basally, obovate, 5–8 × 2–5 cm, apical margins entire to repand, finely hairy abaxially where exposed in bud;

staminal column straight, pale pink to white, 2.5–4 cm, ca. 1/2 as long as petals, bearing filaments nearly throughout, free portion of filaments not secund, 2–4 mm;

pollen pale pink to white;

styles pale pink to white, 5–12 mm;

stigmas pink.

brown, ovoid, 1.8–3 cm, apex truncate, apiculate, glabrous.

reddish brown to brown, reniform-globose, 3–5 mm, hairy, hairs reddish.

= 38.