Flora of North America species comparison

(hollow), branched distally, (1.8–)4.5–13(–21) dm.

(and proximal cauline): petiole (1–)1.8–9.5(–13) cm, ciliate;

blade often oblong, sometimes ovate or lanceolate, (3.8–)6–23(–28) cm × (9–)20–65(–100) mm, margins usually dentate, sometimes sinuate, rarely repand.

petiolate;

blade lanceolate, similar to basal, smaller distally, margins dentate or entire.

dense, slightly elongated in fruit (to 10 dm, flower buds narrowly oblong).

sepals erect, oblong to linear-oblong, (4–)4.5–8(–9) × 1–2 mm;

petals white, spatulate to oblanceolate, (7–)9–15(–16) × 1–2 mm, claw strongly differentiated from blade [(3–)3.5–5.5(–6) mm, widest at base];

nectar glands confluent, median and lateral;

filaments subequal, (6–)7–14.5(–15.5) mm;

anthers exserted, linear to narrowly oblong, 2.5–4.5(–6) mm, circinately coiled, (apiculate);

gynophore (0.5–)1–4(–6) mm.

erect distally, strongly curved upward, stout, (1.5–)2.5–5(–7) mm, slightly flattened at base.

erect, (subappressed to rachis), torulose, somewhat tortuous, terete, (1.8–)3.3–8(–10) cm × (0.7–)1–1.5(–1.8) mm;

ovules 50–78 per ovary;

style usually cylindrical, rarely subclavate, (0.5–)0.7–1.5(–3) mm.

(0.7–)1–1.5(–2) × 0.5–0.7(–1) mm.

= 26.