Flora of North America species comparison

sparingly to freely branched.

stipules linear-subulate, 2.5–6 mm;

petiole of lower leaves 1/4–2/3 times blade;

blade narrowly ovate to transversely ovate, sometimes palmately, hastately, or sagittately 3(–5)-lobed, 3–8 × 1.5–6.5 cm, margins irregularly serrate to crenate, apex broadly acute to acuminate.

solitary flowers in axils of distal leaves or leafy, open panicles.

exceeding petioles, sometimes blades;

involucellar bractlets 6–7, linear to subulate, 2–3 mm.

calyx divided for 2/3–4/5+ its length, campanulate to rotate, 3.2–6 mm;

corolla rotate, petals usually white, usually with yellow base, sometimes with pink blush, sometimes drying yellowish, asymmetrically ovate to orbiculate, 5–14 × 5–10 mm;

staminal column straight or declinate, yellow, 4–10 mm, bearing filaments mostly in distal 1/2–2/3;

filaments 1.5 mm;

anthers subsessile, yellow;

pollen yellow;

styles white or pink, 1.5–2 mm;

stigmas pink.

olivaceous to brown, 8–11 mm diam., valve margins angulate or subangulate in outline, variously short-hairy, with prominent curved or hooked, simple hairs on sutures.

brown, 2.5–2.8 mm, minutely hairy.

= 38 (Mexico, as K. pentasperma).