Flora of North America species comparison

usually several, rarely simple from base, usually unbranched, rarely branched, 0.5–2.4(–3) dm, trichomes simple, to 1.3 mm, mixed with smaller, dendritic ones.

erect to decumbent, unbranched or branched distally, densely pubescent.

basal and cauline;

petiolate or sessile;

basal rosulate, petiolate, blade margins usually 1- or 2-pinnatisect, rarely entire.

petiole 1–4 cm, often ciliate, trichomes simple;

blade broadly ovate to oblong in outline, (terminal segments oblong to or ovate), 1–2.2 cm × 8–15 mm, (terminal segments 0.4–1 cm × 1.5–3 mm), margins pinnatifid, apex obtuse.

shortly petiolate or sessile;

blade similar to basal, smaller distally.

considerably elongated in fruit.

(corymbose, several-flowered), often considerably elongated in fruit.

sepals 1.2–2.2 mm;

petals purple, lavender, or white, suborbicular to obovate, 2.5–4.5 × 1–2.5 mm, narrowed to claw, 1–2 mm, apex rounded;

anthers ovate, 0.3–0.5 mm.

sepals (sometimes persistent), oblong [ovate];

petals spatulate to obovate or suborbicular, (longer than sepals), claw differentiated from blade, (apex rounded);

stamens slightly tetradynamous;

filaments often dilated basally;

anthers ovate or oblong, (apex obtuse);

nectar glands usually confluent, subtending bases of stamens, median glands present or not.

ascending to divaricate-ascending, (often forming less than 40˚ angle), proximalmost bracteate, 5–15(–20) mm, pubescent, trichomes simple (to 1.4 mm), mixed with smaller, dendritic ones.

ascending, spreading, suberect, or divaricate [recurved], slender.

ascending, pyriform, subterete, 5–9 × 2.5–4 mm, base cuneate, apex rounded;

valves each with prominent midvein;

ovules 4 per ovary;

style 0.4–1.2 mm.

siliques or silicles, usually sessile, rarely shortly stipitate, linear, oblong, obovoid, ellipsoid, spatulate, oblanceolate, suboblong, or pyriform [fusiform, ovoid, suborbicular], smooth, 4-angled, angustiseptate, terete, or subterete [latiseptate];

valves each with prominent or obscure midvein, usually glabrous;

replum rounded;

septum complete or perforated;

ovules 4–18 per ovary;

stigma capitate.

(oblong-lanceolate) 2.5–3.2 × 1–1.5 mm.

plump, not winged, usually oblong, rarely oblong-lanceolate;

seed coat (minutely reticulate), not mucilaginous when wetted;

cotyledons incumbent or accumbent.

= 12.