Flora of North America species comparison

sparingly armed with ± stout prickles.

stipules linear-subulate, 3–14 mm;

petiole 1/4–3/4 as long as blade, often prickly;

blade lanceolate to narrowly ovate, unlobed [lobed], 8–17.5 × 3–8 cm, base truncate to rounded, margins crenate-serrate, apex acute, surfaces stellate-tomentose, nectary absent.

solitary flowers in axils of distal leaves.

not jointed, abscising at base, 1.5–7 cm;

involucellar bractlets 10–15, linear-subulate, 1–2.5 cm, margins ± ciliate.

showy, horizontal or ascending;

calyx divided 1/2 length, campanulate, 1.5–3.5 cm, somewhat larger in fruit, lobes triangular, apices acute to acuminate, densely stellate-tomentose, sparingly to moderately setose on veins, nectaries absent;

corolla broadly funnelform, petals pale mauve, red at base, obovate, 4–12 × 2–6 cm, apical margins repand, sometimes undulate, sparingly coarsely hairy abaxially where exposed in bud;

staminal column straight, white or pink, 1.5–4 cm, bearing filaments in ± discrete tiers, free portion of filaments not secund, 1–1.5 mm;

pollen pale purple;

styles white, wedge-shaped, 2–18 mm;

stigmas white.

dark brown, ovoid to ellipsoid, 1.5–3.5 cm, apex acute to depressed, hispid, hairs yellowish to whitish.

dark brown, reniform-ovoid, 2.5–3.5 mm, tomentulose, hairs yellowish to reddish.

= 52.