Flora of North America species comparison

6.5–32 × 0.7–3.3 cm;

petiole not winged, 1–8 cm;

blade very narrowly elliptic, base attenuate to narrowly cuneate, margins deeply and irregularly pinnatifid, apex acute to long-acuminate.

2–22 × 0.7–4.2 cm;

petiole narrowly winged, 1–12 cm;

blade lanceolate to narrowly elliptic, base attenuate, margins usually subentire to sinuate, sometimes deeply and irregularly pinnatifid, apex acuminate.

opening near sunrise;

floral tube 4–6.5(–8.5) mm, soft-pilose in proximal 1/2 inside;

sepals 5.5–13 mm;

petals yellow, (8–)10–23 mm; episepalous staminal filaments 5.5–12 mm, epipetalous ones 2.5–8 mm, anthers (2.3–)2.8–3.5 mm;

sterile prolongation of ovary 14–55 mm, style 9.5–20(–25) mm, pilose near base, stigma exserted beyond anthers at anthesis.

opening near sunrise;

floral tube 1.5–3 mm, with short, matted hairs inside near base;

sepals 4–15 mm, mostly glabrous, sometimes very minutely strigillose;

petals yellow, 5–16 mm, often apiculate; episepalous staminal filaments 1.8–6.5 mm, epipetalous ones 0.5–2.5 mm, anthers 0.9–2 mm;

sterile prolongation of ovary 15–80 mm, style 4–8.5(–11) mm, glabrous or sparsely pubescent near base, stigma usually surrounded by longer anthers at anthesis, rarely exserted beyond anthers.

subterete, cylindric-ovoid, 7–25 × 3–5 mm, walls thick, evidently distended by seeds;

sessile.

4-angled, oblong-ellipsoid, 11–28 × 5–8 mm, walls thick, scarcely distended by seeds, becoming blackened and persistent on plants for 1+ years after shedding seeds; rarely with pedicel to 10 mm.

uniformly tan to brown, curved-cylindric, 1.5–2 × 0.6–0.8 mm, pitted in rows.

uniformly tan to light brown, ellipsoid-oblanceoloid, 1.3–1.9 × 0.6–1 mm, coarsely pitted.

= 14, 28, 42.

= 14.