Flora of North America species comparison

often several from base (often with sterile shoots), usually erect or ascending, 0.7–1.5(–2) dm.

simple or few to several from base, erect, ascending, or decumbent, (0.2–)0.5–1.8(–2.8) dm.

subsessile;

blade broadly oblanceolate, obovate-spatulate, or obovate, 0.6–1.4(–1.7) cm × (1–)2–6 mm (gradually smaller distally), base attenuate, apex rounded, obtuse, or subacute. (Racemes corymbose, simple, or in panicles terminating each stem.) Fruiting pedicels divaricate, straight, slender, (2–)3–7(–9) mm, trichomes uniformly stellate.

subsessile or (proximal) attenuate to petiole-like base (to 0.5 cm);

blade linear to oblanceolate-linear, (0.3–)0.5–2.5(–3) cm × (0.5–)1–3(–4) mm (gradually smaller distally), base attenuate, apex acute.

sepals oblong, 1.5–2 × 0.7–1 mm, stellate-pubescent;

petals yellow, broadly spatulate, 2.5–3.5(–4) × 1–1.5 mm, base attenuate, apex often obtuse or rounded, glabrous abaxially;

filaments: median pairs unilaterally broadly winged, apically 1-toothed, lateral pair with lanceolate or narrowly oblong basal appendage, apically obtuse or subacute, 1.5–2 mm;

anthers oblong, 0.3–0.4 mm.

sepals oblong, 1.4–1.8(–2) × 0.4–0.5 mm, stellate-pubescent;

petals pale yellow, oblanceolate, 2–2.5 × 0.5–0.6 mm, base attenuate, apex obtuse or retuse, sparsely stellate-pubescent abaxially;

filaments: median pairs not toothed, gradually expanded from apex to narrowly winged base, lateral pair with broadly winged appendage apically notched into 2 teeth, 1–1.8(–2) mm;

anthers ovate, 0.1–0.2 mm.

ascending or subdivaricate, straight, stout, (1–)1.5–3.5(–4.5) mm, trichomes uniformly stellate.

broadly elliptic or obovate, 3–4.5(–5) × 2.5–3.5 mm, apex obtuse to rounded;

valves inflated at middle or on 1 side, flattened at margins, densely stellate-pubescent;

ovules (1 or) 2 per ovary;

style (slender), 1.5–2 mm, glabrous.

orbicular, 2.5–4(–4.5) mm diam., apex shallowly emarginate, usually glabrous;

valves uniformly inflated at middle, broadly flattened at margins, often glaucous, rarely sparsely pubescent (when young);

ovules 2 per ovary;

style 0.3–0.7 mm, glabrous.

ovoid, compressed, 1–1.7 × 0.8–1.2 mm, not winged or margined.

ovoid, slightly compressed, 1.2–1.5 × 0.9–1.1 mm, margined or not.

= 16, 32.

= 32.