Flora of North America species comparison

branched distally, 3–13 dm.

usually branched distally, (widely spreading), 3–20 dm.

(rosulate when biennial);

petiole (often winged), to 15 cm;

blade lyrate-pinnatifid, ± pinnately lobed, 5–25(–40) cm × 20–70(–100) mm, lobes 0–6 each side, (smaller than terminal), surfaces (glaucous), glabrous or sparsely hairy when immature, glabrescent, or, rarely, pubescent.

petiole to 10 cm;

blade lyrate-pinnatifid to sinuate-lobed, 6–30 cm × 10–100 mm, lobes 1–3 each side, (smaller than terminal, terminal lobe ovate, obtuse).

(middle and distal) sessile;

blade base auriculate or amplexicaul, (margins entire).

sessile or subsessile;

blade (ovate-elliptic to lanceolate, similar to basal, reduced distally and less divided), base tapered, not auriculate or amplexicaul, (margins entire to sinuate-serrate).

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

not paniculately branched.

sepals (5–)6–10 × 1.5–2.5 mm;

petals golden or creamy to pale yellow, broadly obovate, 10–16 × (5–)6–9(–10) mm, claw 5–9 mm, apex rounded;

filaments (5–)7–10 mm;

anthers 1.5–2.5 mm.

sepals 4–6(–7) × 1–1.5 mm;

petals yellow, ovate, 7–11(–13) × (2.5–)3–4.5(–5.5) mm, claw 3–6 mm, apex rounded;

filaments 3.5–5 mm;

anthers 1–1.5 mm.

spreading to ascending (slender), 1–3 cm.

erect (straight), (2–)3–5(–6) mm.

spreading to ascending, smooth or slightly torulose, terete, (3.5–)5–10(–11) cm × (2.5–)3.5–5 mm;

valvular segment with 12–20(–30) seeds per locule, (3–)4–8.5(–9.5) cm, terminal segment usually seedless, rarely 1 or 2-seeded (attenuate-conic, thin), (5–)9–16 mm.

erect-ascending (± appressed to rachis), smooth, ± 4-angled, 1–2.5(–2.7) cm × (1.5–)2–3(–4) mm;

valvular segment 2–5(–8)-seeded per locule, (0.4–)0.8–2(–2.5) cm, terminal segment seedless (linear, narrow), (1–)2–5(–6) mm.

dark brown to black, light brown, or reddish, 1.8–2.7(–3) mm diam.;

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

brown to black, 1.2–1.5(–2) mm diam.;

seed coat coarsely reticulate, minutely alveolate, not mucilaginous when wetted.

= 38.

= 16.