Flora of North America species comparison

(when present) 1–2 dm.

(when present) 1–2.5 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 1–2.5 cm;

blade (2–)3–7.5(–10) cm, lobes 1–5 on each side, margins entire or shallowly dentate, terminal lobe orbicular to broadly ovate, 0.5–1.2(–1.8) cm × 5–11(–17) mm, considerably larger than lateral lobes, margins entire or shallowly 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.

sepals widely spreading, oblong-linear, (3.3–)3.7–5.8 × 1–1.6 mm;

petals spreading, usually yellow, sometimes white or lavender, broadly spatulate to obovate, 9–13(–15) × 3.5–6(–9) mm, claw yellow to orange, 2–3.5 mm, apex deeply emarginate, apical notch 0.5–1.3 mm deep;

filaments: median 4–6.3 mm, lateral 1.7–2.6 mm;

anthers 0.9–1.5 mm.

solitary flowers 30–120 mm;

racemes to 40 mm.

solitary flowers 30–100 mm;

racemes 15–70 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 to linear, (1–)1.5–3.4 cm × (2.5–)3–4(–4.5) mm, smooth, subterete;

valves thick;

ovules (6–)8–12 per ovary;

style (3–)3.5–7 mm.

2.3–3.5 mm diam.;

wing 0.2–0.4 mm wide;

embryo slightly accumbent.

2.5–3.4 mm diam.;

wing 0.2–0.3 mm wide;

embryo nearly straight to slightly accumbent.

= 30.

= 30.