Flora of North America species comparison

erect, unbranched or branched distally, (2.5–)4–12(–14) dm.

petiole 2–10(–16) cm;

blade lanceolate to oblanceolate or ovate, (2.2–)5–18(–22) cm × 10–40(–60) mm, margins often entire, sometimes dentate, rarely lyrate-pinnatifid.

sessile;

blade lanceolate, (2–)3.5–8.5(–11) cm × (2–)5–19(–28) mm (smaller distally, base auriculate to sagittate), margins entire.

loose.

sepals oblong-linear, 12–18 mm;

petals whitish to lemon yellow, narrowly oblanceolate, 13–20 × 1–3 mm, claw 7–11 mm, (nearly linear-lanceolate), slightly wider at base, (margins usually erose, rarely subentire and crisped);

filaments 11–20 mm;

anthers 3.5–6 mm;

gynophore (6–)11–22(–25) mm.

horizontal to divaricate-ascending, 4–9(–12) mm.

divaricate or descending, curved inward, (torulose), subterete, 3–6(–7) cm × 1.2–2 mm;

ovules 28–50 per ovary;

style 0.04–0.3 mm.

oblong, 2–3 × 1–1.2 mm.

= 28.