Flora of North America species comparison

glaucous.

stipules caducous, linear-subulate, 1–3 mm;

petiole 1/3 to equaling blade;

blade orbiculate to transversely elliptic, deeply palmately 3–5-lobed, 10–19 × 13–25 cm, base cordate, segments linear-lanceolate, margins remotely, unevenly serrate, apices acuminate, surfaces glabrous, nectary absent.

solitary flowers in axils of distal leaves.

jointed distally, 3–14 cm, 1/3–1 3/4 petioles;

involucellar bractlets 9–15, linear-subulate, 2.5–4 cm, not ciliate.

showy, horizontal or ascending;

calyx divided 3/4 length, rotate, 3.5–6 cm, larger in and longer than fruit, lobes narrowly triangular, apices acute to acuminate, nectaries absent;

corolla rotate, petals not overlapping, bright red, narrowly spatulate-obovate, (6–)7.5–10 × 2.5–5.5 cm, minutely hairy abaxially where exposed in bud;

staminal column straight, exserted, red, pink to white basally, 6.5–7 cm, bearing filaments in distal 1/3, free portion of filaments not secund, 4–8 mm;

pollen dull yellow to dull red;

styles red, 5–9 mm;

stigmas red.

brown, ovoid to globose, 2.8–3.5 cm, apex acute, apiculate, glabrous.

brown, reniform-globose, 2.5–3.8 mm, hairy, hairs often in lines, brownish to reddish.

= 38.