Flora of North America species comparison

older twigs yellowish brown, glabrescent, line of fine hairs obscured by other pubescence or absent.

stipules narrowly triangular to subulate, 1–3 mm;

petiole to 1/2 as long as blade, adaxial fine, curved hairs absent or obscured by other pubescence;

blade oblong or broadly to narrowly ovate (often folded in pressed specimens), usually unlobed, rarely shallowly 3-angulate-lobate, mostly 1.2–3 × 1–2.5 cm, base cuneate to rounded or truncate, margins irregularly and coarsely dentate or dentate-crenate, apex broadly acute to truncate, surfaces stellate-tomentose, ± obscured nectary present abaxially on midvein near base.

solitary flowers in axils of distal leaves.

obscurely joined below apex, 0.5–2 cm, equaling or exceeding subtending petioles;

involucellar bractlets 7–10, often absent, narrowly triangular to subulate, to 0.6 cm, margins not ciliate.

ascending to erect;

calyx divided 2/3–4/5 length, funnelform, 0.7–1.6 cm, lobes narrowly triangular-ovate, apices acuminate, nectaries absent;

corolla rotate, petals pale purple or pink to nearly white, with maroon spot or lines basally, asymmetrically obovate, 1.3–3 × 0.9–2 cm, margins ± entire, finely hairy abaxially where exposed in bud;

staminal column straight, pink, 0.4–1.1 cm, bearing filaments throughout, free portion of filaments not secund, 1–3 mm;

pollen dark orange;

styles pale pink, 1.5–4 mm;

stigmas pale pink to maroon.

dull yellow-green with darker medial stripe on each valve, drying straw-colored, ovoid to subglobose, 0.6–1 cm, shorter than calyces, apex apiculate, glabrous or with minute hairs near apex and on sutures.

dark brown, angulately reniform-ovoid, 2.2–3 mm, whitish, silky-hairy ± throughout, hairs 3–4 mm.

= 22 (Mexico: Durango).