Flora of North America species comparison

(when present) 1–2 dm.

(when present) 1–3 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.

petiole 1.8–3.9 cm;

blade 3.5–6.5(–8) cm, lobes 1–3 on each side, margins shallowly dentate, terminal lobe suborbicular, 6–12 × 5–11 mm (equal to or slightly longer than wide), considerably larger than lateral lobes, margins usually shallowly dentate, sometimes slightly lobed.

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.

sepals widely spreading, oblong-linear, 2.9–4.6 × 1–1.9 mm;

petals spreading, pale yellow, obcordate to broadly obovate, (5–)6–9 × 1.5–4.5 mm, claw bright yellow, 1.6–2.8 mm, apex shallowly emarginate, apical notch 0.1–0.4(–0.6) mm deep;

filaments: median 3–4.5 mm, lateral 1.3–2.4 mm;

anthers 0.6–1.1 mm.

solitary flowers 30–120 mm;

racemes to 40 mm.

solitary flowers 30–90 mm;

racemes 30–60 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.

oblong, 2–3.1 cm × 3–5 mm, smooth, latiseptate, (margined);

valves thin;

ovules 6–14 per ovary;

style (1.5–)2–3 mm.

2.3–3.5 mm diam.;

wing 0.2–0.4 mm wide;

embryo slightly accumbent.

2–4.2 mm diam.;

wing 0.2–0.3 mm wide;

embryo straight.

= 30.

= 48.