Flora of North America species comparison

often several from base, erect, ascending, or decumbent, (unbranched or few-branched distally), (0.2–)0.4–1.6(–2) dm.

often several from caudex (sterile shoots absent or few), usually erect or ascending, (2.5–)3–6(–7) dm.

subsessile;

blade oblanceolate or linear-oblanceolate, (0.5–)0.7–1.5(–2) cm × (1–)2–4(–6) mm (gradually smaller distally), base attenuate, apex subacute.

subsessile;

blade narrowly oblanceolate to linear, (0.5–)0.7–2.5(–3) cm × 1–5(–8) mm (gradually smaller distally), base cuneate to attenuate, apex obtuse to subacute, (surfaces often more grayish abaxially than adaxially). (Racemes corymbose, in panicles terminating each stem.) Fruiting pedicels divaricate-ascending, straight or slightly curved distally, slender, (2–)2.5–6(–8) mm, trichomes uniformly stellate.

sepals oblong, 1.2–1.5 × 0.5–0.6 mm, stellate-pubescent (trichomes with longer rays and appearing simple near apex);

petals pale yellow, spatulate, 1.7–2 × 0.4–0.5 mm, base abruptly narrowed to claw, apex deeply emarginate, glabrous;

filaments: median pairs not toothed, slightly expanded basally, lateral pair with basal appendage to 0.5 × 0.1 mm, often apically 2-toothed, 1.4–1.7 mm;

anthers ovate, 0.1–0.2 mm.

sepals oblong, 1.2–2 × 0.4–0.7 mm, stellate-pubescent;

petals yellow, spatulate, 2.5–3.5 × 0.5–1 mm, base attenuate, apex often obtuse or rounded, glabrous abaxially;

filaments: median pairs broadly winged, apically 1-toothed, lateral pair with lanceolate or narrowly oblong basal appendage, apically subacute, 1.5–2.5 mm;

anthers oblong, 0.2–0.3 mm.

ascending to suberect, straight, stout, 1–3(–4) mm, trichomes uniformly stellate.

ovate-oblong, (3–)3.5–5 × (2.5–)3–4 mm, apex obtuse;

valves uniformly inflated at middle, broadly flattened at margins, densely stellate-pubescent (rays equal);

ovules 2 per ovary;

style (slender), 0.3–0.5 mm, basally stellate-pubescent.

broadly elliptic to orbicular, 3.5–5 × 2.5–5 mm, apex obtuse to rounded;

valves not inflated, flattened and slightly undulate, stellate-pubescent;

ovules 1 per ovary;

style (slender) 1–2 mm, sparsely pubescent.

ovoid, compressed, 1.6–1.9 × 1.2–1.6 mm, margins winglike, 0.1–0.3 mm wide.

suborbicular to broadly ovoid, compressed, 3–3.8 × 2–3.2 mm, margins winged, wing 0.5–0.9 mm wide.

= 16.

= 16, 32.