Flora of North America species comparison

usually simple from base, (2–)3–8 dm, (retrorsely hispid).

petiole 1–6 cm;

blade oblong, obovate, or oblanceolate in outline, lyrate or pinnatifid, sometimes undivided, 3–15(–22) cm × 10–50 mm, margins dentate, apex obtuse or acute;

lobes 1–4 each side, oblong or ovate, to 4 cm × 20 mm (smaller than terminal).

(distal) subsessile;

blade often undivided.

sepals 7–11 × 1–2 mm, sparsely pubescent;

petals yellow or creamy white (veins dark brown or purple), 15–25 × 4–7 mm, claw to 15 mm;

filaments (slender), 7–12 mm;

anthers 2–2.5 mm.

divaricate or ascending, 7–25 mm, (straight).

cylindrical or narrowly lanceolate;

valvular segment 1–1.5 mm;

terminal segment (1.5–)2–11(–14) cm × (2.5–)3–8(–11) mm, (base rounded), strongly constricted between seeds (usually breaking), strongly ribbed, beak narrowly conical;

style 10–50 mm.

(reddish brown or dark brown to black), oblong or ovoid, 2.5–3.5 × 1.8–2.5 mm.

= 18.