Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.7–3 dm, densely pubescent proximally, trichomes short-stalked, 2–6-rayed, 0.06–0.25 mm, glabrous distally.

blade narrowly oblanceolate, 1–3 mm wide, margins entire, ciliate near petiole base, trichomes (simple and spurred), to 0.4 mm, surfaces sparsely to densely pubescent, trichomes short-stalked, 4–8-rayed, 0.04–0.15 mm.

5–9, rarely concealing stem proximally;

blade auricles to 0.3–1 mm, surfaces of distalmost leaves glabrous.

(sometimes absent);

petiolate, subsessile, or sessile;

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

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

5–13-flowered, usually unbranched.

ebracteate, often elongated in fruit.

ascending at anthesis;

sepals pubescent;

petals lavender, 4–5 × 0.5–0.8 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.

divaricate-ascending, straight, 3–8 mm, glabrous.

divaricate-ascending, not appressed to rachis, not secund, straight, edges parallel, (2.5–)3–4.7 cm × 1.2–1.7 mm;

valves glabrous;

ovules 78–112 per ovary;

style 0.1–0.5 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 to sub-biseriate, 1.1–1.4 × 0.7–0.9 mm;

wing continuous, 0.05–0.12 mm wide.

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

cotyledons accumbent or incumbent.