Flora of North America species comparison

stellate hairs of younger stems dense, appressed, 4-armed, arms approximate in pairs, aligned with stem axis, lines of fine, curved hairs absent or obscured;

older growth grayish, rough, glabrescent.

stipules linear-subulate, 3–10 mm;

petiole primarily in distal 1/2, sometimes themselves shallowly pinnately lobed, surfaces scabridulous, hairs appressed-stellate, obscure nectary present abaxially on midvein near base.

stipules linear-subulate, 1.5–5 mm;

petiole 1/2–3/4 blade, glabrous;

blade narrowly to broadly triangular-ovate, deeply hastately 3-lobed, 5–12 × 1–14 cm, base cordate to truncate, lobes linear-lanceolate, 3+ times as long as wide, margins coarsely and remotely serrate, apices long-acuminate, surfaces glabrous, nectary absent.

solitary flowers in axils of distal leaves.

solitary flowers in axils of distal leaves.

jointed below apices, to 17 cm, usually much exceeding subtending leaves;

involucellar bractlets 8–14, linear-subulate, 1–2 cm, margins ciliate.

jointed medially to distally, 1–3 cm, 1/3–2/3 times subtending petioles, minutely hairy distal to joint;

involucellar bractlets 8–10, linear-subulate, 1.8–2.2 cm, margins inconspicuously ciliate, simple-hairy.

erect or ascending;

calyx divided 3/4+ length, funnelform, 1.4–2.2 cm, equaling or slightly exceeding involucel, lobes narrowly lanceolate-triangular, margins ciliate, apices attenuate, nectaries absent;

corolla rotate, petals yellow to cream, usually with dark to obscure maroon lines basally, asymmetrically obovate to broadly obovate, 1.6–4 × 1–3.5 cm, margins ± entire, sparingly hairy abaxially where exposed in bud;

staminal column straight, yellow or cream, 0.6–1.4 cm, bearing filaments throughout, free portion of filaments not secund, 1–3 mm;

pollen yellow-orange;

styles cream, 1.5–5 mm;

stigmas maroon or cream.

± horizontal;

calyx divided 1/3 length, broadly cylindric-campanulate, 1.5–3 cm, larger in fruit, lobes very broadly triangular and subtrullate, apices apiculate, hairy, hairs simple, 1+ mm, underlain by shorter stellate ones, veins sometimes zigzag, nectaries absent;

corolla broadly funnelform, petals creamy white, deep red basally, obovate, 4.5–7 × 3–5.5 cm, apical margins repand, sometimes undulate, sometimes minutely hairy abaxially where exposed in bud;

staminal column straight, pale pink to white, 2.5–3 cm, length 1/2 petals, bearing filaments nearly throughout, free portions of filaments not secund, 1–2 mm;

pollen pale pink to purple;

styles cream, 4–10 mm;

stigmas cream.

pale olivaceous gray with darker median stripe on each valve, ovoid or ellipsoid, 0.7–1.7 cm, to 2/3 calyces, apex rounded, hairy near apex or glabrous throughout.

brown, ovoid, 1.6–2.8 cm, apex rounded-truncate, apiculate, hairy.

dark brown, angulately reniform-ovoid, 2.4–3 mm, silky-hairy ± throughout.

reddish brown to brown, reniform-globose, 3.5 mm, hairy, hairs reddish brown.

= 38.