Flora of North America species comparison

erect or ascending to decumbent, often branched distally.

simple to many from base, (0.5–)1–3.5(–5.5) dm, hirsute or puberulent basally, often glabrous distally.

basal and cauline;

petiolate;

basal (loosely) rosulate, blade margins pinnatifid to pinnatisect, (lobes) dentate or entire;

cauline similar to basal.

petiole (0.3–)0.8–1.5(–2) cm;

blade oblong to oblanceolate in outline, (1–)1.5–7(–10) cm × 4–20(–30) mm, margins pinnatifid to pinnatisect;

lobes (4–)6–12(–15) per side, ovate or oblong to linear, margins often coarsely dentate proximally, entire or minutely dentate distally, larger distally;

terminal lobe equal to or larger than lateral, margins entire or laterally 1-toothed, surfaces usually pubescent, rarely glabrate.

shortly petiolate;

blade smaller, narrower, (lobe) margins entire.

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

lax in fruit.

sepals erect, oblong, lateral pair not saccate basally;

petals white, oblanceolate, (longer than sepals), claw undifferentiated from blade, (apex obtuse);

stamens slightly tetradynamous;

filaments not dilated basally;

anthers ovate, (apex obtuse);

nectar glands lateral (minute), 1 on each side of lateral stamen.

sepals 1–2 × 0.5–0.8 mm, glabrous or subapically with few hairs;

petals 2–3 × 0.5–1 mm;

filaments 1.5–2 mm;

anthers 0.3–0.4 mm.

divaricate-ascending, slender.

straight, (1.5–)2.5–6(–8) mm, glabrous.

siliques, sessile or subsessile, linear, torulose, straight, latiseptate;

valves each with obscure midvein, glabrous;

replum rounded;

septum complete;

ovules (20–)28–44 per ovary;

style distinct (conical);

stigma capitate.

divaricate-ascending, (1–)1.5–2.5(–3.2) cm × 1–1.5 mm, slightly torulose;

style 0.2–0.7 mm.

uniseriate, flattened, narrowly winged, orbicular or suborbicular;

seed coat not mucilaginous when wetted;

cotyledons accumbent.

orbicular or suborbicular, 1–1.2 × 0.9–1 mm;

wing 0.1–0.15 mm.

= 8.

= 16.