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 to filiform, 2.5–12 mm;

petiole mostly 1/4–1/2 blade, densely hairy adaxially;

blade broadly rhombic-ovate, usually 3-lobed, sometimes unlobed in inflorescence, 3.5–9.5 × 2.5–8.5 cm, base cuneate or rounded, margins coarsely crenate-serrate, apex acute to short-acuminate, surfaces glabrate, midvein with nectary abaxially.

solitary flowers in axils of distal leaves.

solitary flowers or few-flowered clusters 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 at or near base, to 1.5 cm, densely, minutely stellate-hairy;

involucellar bractlets 7 or 8, linear or narrowly oblanceolate, 0.9–2.2 cm, unequal in length, margins not ciliate, densely stellate-hairy throughout.

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 or ascending, sometimes double;

calyx lobed 1/2 length, broadly campanulate, 1.6–2 cm, lobes triangular, apices acute or short-acuminate, minutely and densely stellate-hairy throughout, nectaries absent;

corolla broadly funnelform, petals pink, lavender, blue, or white, usually dark red basally, obliquely obovate, 3.5–7.5 × 2.5–5.5 cm, margins entire or repand, sometimes undulate, finely hairy where exposed in bud;

staminal column white, 2.5–3.5 cm, bearing filaments nearly throughout, free portion of filaments not secund, mostly 1.5–3 mm;

pollen cream;

styles white, 3–8 mm, branches sometimes of unequal lengths;

stigmas white.

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.

greenish tan, ovoid, 1.5–2.5 cm, apex apiculate, minutely, densely stellate-hairy.

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

reddish brown, reniform-ovoid, laterally flattened, 4–5 mm, glabrous laterally, long-hairy dorsally, hairs straight, reddish orange.

= 40, 80, 90 (all cultivars).