Flora of North America species comparison

unbranched or branched distally, 2–7(–10) dm, glabrous or pubescent basally, trichomes branched, minute.

unbranched or branched distally, (1.2–)3–10(–13) dm, glabrous or sparsely pubescent basally, trichomes branched, rarely mixed with fewer, simple ones.

often withered by anthesis.

often withered by anthesis.

blade lanceolate, narrowly oblong, or linear-lanceolate, pinnatifid or sinuate-dentate, (1.5–)2.5–7(–10) cm × 2–10(–20) mm, base sagittate or strongly auriculate, margins usually coarsely dentate to lobed, rarely entire, apex acute, surfaces glabrescent or sparsely pubescent, trichomes primarily forked.

blade lanceolate, narrowly oblong, or linear-lanceolate, (1–)2–7(–9) cm × 2–10(–15) mm, base sagittate or strongly auriculate, margins entire or, rarely, remotely denticulate, apex acute, surfaces glabrescent or sparsely pubescent, trichomes usually forked.

sepals 2–4.2 × 0.7–1.5 mm;

petals pale yellow, (3.5–)4–6.5 × 1.5–2 mm;

filaments 2–3.5 mm;

anthers ca. 0.5 mm.

sepals 2–3(–4) × 0.5–1 mm;

petals yellow, (3.5–)4–6 × 1–1.5 mm;

filaments 1.5–3 mm;

anthers ca. 0.5 mm.

ascending to divaricate, 15–30(–40) mm.

ascending, (8–)12–20(–27) mm.

depressed globose, 7–11 × (5.5–)6.5–8(–9) mm (almost as long as wide, or longer), apex subtruncate or, rarely, rounded;

valves each with prominent midvein, margin obscurely or narrowly winged;

style 1.2–2.5 mm.

pyriform or broadly obovoid, 7–9(–13) × 4–5(–6) mm (distinctly longer than wide), apex often subtruncate;

valves each with prominent midvein, margin narrowly winged;

style 1.2–2.5 mm.

reddish or yellowish brown, (1.8–)2–3 × 0.7–1 mm.

dark brown, (1.5–)1.8–2.5 × 0.7–1 mm.

= 40.

= 40.