Flora of North America species comparison

(1–)2–6(–10) dm.

petiole (0.5–)1–7(–15) cm, (rarely ciliate basally);

blade usually lyrate-pinnatifid, (1–)1.5–6(–11) cm, lobes (0, 1, or) 2–4 (or 5) on each side, lateral lobes oblong or ovate, 0.2–1 cm × 1–5 mm, not fleshy, margins entire, terminal lobe 1.5–5 cm × 10–25 mm.

blade usually lyrate-pinnatifid (sometimes undivided and margins coarsely toothed or subentire), lateral lobes 1–4, (usually oblong or ovate, rarely lanceolate, to 2 × 1 cm), margins entire, (terminal lobe to 5 × 3 cm, margins usually entire or repand, rarely dentate); conspicuously auriculate, auricles ovate or narrowly oblong, (to 8 × 5 mm, margins entire).

sepals 2.5–3.5 × 1–1.5 mm, lateral pair slightly saccate basally, margins scarious, (subapically sparsely pubescent or glabrous);

petals yellow or pale yellow, oblanceolate, 5–7(–8) × (1.5–)2–3 mm, base attenuate, apex rounded;

filaments 3–4.5 mm;

anthers 1 mm;

ovules (24–)26–36 per ovary;

gynophore to 0.5 mm.

erect or ascending, (2–)3–6(–7) mm, terete or subquadrangular, stout, (narrower than fruit).

erect to erect-ascending, rarely appressed to rachis, torulose, terete to subquadrangular, (2.5–)3.1–4(–4.5) cm × 1.5–2 mm;

style stout, 0.5–1.2(–2) mm.

brown, somewhat plump, ovoid or oblong, 1.2–1.5 × 0.9–1 mm.

= 16.