Flora of North America species comparison

usually branched distally, rarely basally, (2.5–)4–10(–15) dm.

petiole (1–)2–10(–15) cm;

blade lanceolate, 10–45 cm, margins coarsely dentate or pinnatifid, lateral lobes oblong or lanceolate, (terminal lobe deltate or lanceolate, larger than lateral lobes).

(distalmost) blade lanceolate or sublinear.

sepals spreading, 2.5–4 × 1–1.5 mm;

petals (4–)4.5–7(–8) × (2–)3–5 mm, claw (slender), 1–2 mm;

filaments 1.5–3.5 mm;

anthers 0.8–1 mm.

divaricate, straight, 1–2(–2.3) cm.

ovoid, or, rarely, suboblong and slightly constricted at middle, terete, not winged, 1- or 2-loculed, (0.5–)0.6–0.7(–0.8) cm × 3–4(–5) mm, (gradually tapering to apex);

style obsolete or, rarely, to 1 mm.

1 or 2 per fruit, 2–3.5 mm.

= 14.