Flora of North America species comparison

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

petiolate or sessile;

blade base not auriculate, margins usually entire.

short-stalked or sessile and stellate, or distinctly stalked and subdendritic or forked, sometimes mixed with simple ones.

ebracteate [bracteate], often elongated in fruit.

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.

actinomorphic;

sepals erect to spreading, lateral pair seldom saccate basally;

petals white or yellow [orange, pink, or purple], claw present, usually distinct;

filaments appendaged, winged (toothed), or unappendaged;

pollen 3-colpate.

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.

silicles, dehiscent, unsegmented, latiseptate or terete;

ovules 2–16(–20) per ovary;

style distinct;

stigma usually entire, rarely 2-lobed.

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

biseriate or aseriate, rarely uniseriate;

cotyledons accumbent or incumbent, rarely oblique.

= 16, 32.