Flora of North America species comparison

(1–)2.5–8 dm.

petiole (0.5–)1–6(–8) cm;

blade pinnatifid to pinnatisect, 1.5–11 cm, lobes (3–)6–10 on each side, lateral lobes oblong or ovate, 0.4–3 cm × 1–10 mm, not fleshy, margins entire, terminal lobe considerably larger than lateral ones, 1–5 cm × 10–350 mm.

blade pinnatisect, lateral lobes 1–4, (oblong to lanceolate), margins often entire, rarely coarsely toothed; conspicuously auriculate, auricles ovate or narrowly oblong, (to 10 × 4 mm, margins entire).

sepals 3–5 × 0.7–1.5 mm, lateral pair slightly saccate basally, margins scarious;

petals yellow or pale yellow, oblanceolate to spatulate, (5–)6–7(–8.5) × 1.5–3 mm, base cuneate, apex truncate or emarginate;

filaments 3–5 mm;

anthers 0.8–1.2 mm;

ovules (34–)38–48(–52) per ovary;

gynophore to 0.3 mm.

divaricate to ascending, (2–)3–6(–7) mm, terete, stout (almost as broad as fruit).

erect to ascending, not appressed to rachis, torulose, subterete to slightly latiseptate, (4.5–)5.3–7(–8) cm × 1.5–2 mm;

style stout, 0.2–1(–2) mm.

dark brown, somewhat plump, oblong or quadrate, 1.8–2.5 × 1.4–1.6 mm.

= 16.