Flora of North America species comparison

1–3 per caudex branch, arising from center of rosette near ground surface, or arising laterally proximal to sterile shoots, 1–2.5 dm, glabrous throughout.

blade narrowly oblanceolate, 1–3(–6) mm wide, margins usually entire, rarely apically few-toothed, not ciliate, surfaces sparsely pubescent, trichomes short-stalked, 4–8-rayed, 0.08–0.2 mm.

4–8, not concealing stem;

blade auricles 1–2 mm, surfaces of distalmost leaves glabrous.

(sometimes absent); petiolate, subsessile, or sessile;

blade base auriculate or not, margins usually entire or dentate, rarely pinnatifid.

5–12(–18)-flowered, usually unbranched.

ebracteate, often elongated in fruit.

ascending at anthesis;

sepals glabrous;

petals lavender to purple, 4–5.5 × 1–1.5 mm, glabrous;

pollen spheroid.

actinomorphic;

sepals erect, ascending, or spreading, lateral pair usually not saccate basally;

petals white, yellowish, pink, lavender, or purple, claw present, often indistinct;

filaments unappendaged, not winged;

pollen 3-colpate.

usually divaricate-ascending, rarely horizontal, straight, 2–5(–10) mm, glabrous.

usually divaricate-ascending, rarely horizontal, not appressed to rachis, secund (often weakly so), straight, edges parallel, 3–5.5 cm × 1.5–2 mm;

valves glabrous;

ovules 42–54 per ovary;

style 0.05–0.1 mm.

usually siliques, rarely silicles, dehiscent, unsegmented, usually latiseptate, rarely terete or slightly angustiseptate;

ovules [2–]4–250 per ovary;

style usually distinct, rarely obsolete;

stigma usually entire, rarely 2-lobed.

uniseriate, 1.1–1.5 × 0.9–1.3 mm;

wing continuous, 0.1–0.3 mm wide.

biseriate, sub-biseriate, uniseriate, or, rarely, aseriate;

cotyledons accumbent or incumbent.

often short-stalked, sessile, or subsessile, usually forked or dendritic, rarely malpighiaceous, sometimes simple or absent.