Flora of North America species comparison

branched distally, 5–10 dm.

unbranched or branched distally, 3–10 dm.

petiole to 30 cm;

blade oblong or obovate, to 45 cm × 150 mm, (fleshy), blades pinnatifid or margins dentate.

petiole (winged), (1–)2–10(–17) cm;

blade ± lyrate-pinnatifid to pinnate to pinnatisect, (5–)10–40(–60) cm × 30–100(–200) mm, (margins sinuate-dentate, sometimes ciliate), lobes 2–4(–6) each side, (terminal lobe oblong-obovate, obtuse, large, blade surfaces usually setose).

(distal) sessile;

blade (oblong to lanceolate), base auriculate and amplexicaul, (margins entire).

(middle and distal) sessile;

base auriculate to amplexicaul, (margins subentire).

not paniculately branched.

not paniculately branched, (with open flowers overtopping or equal to buds).

sepals 8–15 × 1.5–2.7 mm;

petals yellow, white, or lemon yellow, ovate or elliptic, (15–)18–25(–30) × (6–)8–12 mm, claw 7–15 mm, apex rounded;

filaments 8–12 mm;

anthers 2.5–4 mm.

sepals (3–)4–6.5(–8) × 1.5–2 mm;

petals deep yellow to yellow, obovate, 6–11(–13) × (2.5–)3–6(–7) mm, claw 3–7 mm, apex rounded;

filaments 4–6(–7) mm;

anthers 1.5–2 mm.

spreading to ascending, (8–)14–25(–40) mm.

ascending to spreading, (5–)10–25(–30) mm.

spreading to ascending, smooth, ± 4-angled or subterete, (2.5–)5–8(–10) cm × (2.5–)3–4(–5) mm;

valvular segment with 10–20 seeds per locule, (2–)3–7.5(–9) cm, terminal segment usually seedless, rarely 1 or 2-seeded, (conic), (3–)4–10 mm.

ascending to somewhat spreading, torulose, terete, (2–)3–8(–11) cm × 2–4(–5) mm;

valvular segment with 8–15 seeds per locule, (1.3–)2–5(–7.5) cm, terminal segment seedless, 8–22 mm.

brown, 1.7–2.5 mm diam.;

seed coat reticulate, not mucilaginous when wetted.

black, brown, or reddish, 1.1–2 mm diam.;

seed coat very finely reticulate-lightly alveolate, not mucilaginous when wetted.

= 18.

= 20.