Flora of North America species comparison

(when present) 1–2 dm.

petiole 0.3–2.6 cm;

blade 2.3–8.5(–10) cm, lobes 3–10 on each side, margins coarsely dentate, terminal lobe suborbicular, 0.3–0.6 cm × 5–7 mm (slightly shorter than wide), slightly larger than lateral lobes, margins coarsely dentate.

sepals widely spreading, oblong, 2.5–4.5 × 0.9–1.5 mm;

petals often erect, white, oblanceolate, 3.7–6.4 × 1–2(–2.5) mm, claw white or pale yellow, 1.3–2.5 mm, apex obtuse or truncate;

filaments: median 2.5–4.2 mm, lateral 1.6–2.6 mm;

anthers 0.5–0.8(–1) mm.

solitary flowers 30–120 mm;

racemes to 40 mm.

narrowly oblong, (1.5–)2–3 cm × 3–4(–5) mm, smooth, latiseptate;

valves thin;

ovules 18–26 per ovary;

style 0.9–2(–2.5) mm.

2.3–3.5 mm diam.;

wing 0.2–0.4 mm wide;

embryo slightly accumbent.

= 30.