Flora of North America species comparison

(simple or several from base), erect, branched basally and distally.

(2–)4–15(–20) dm, densely pubescent proximally, trichomes retrorse.

basal and cauline;

petiolate or subsessile;

basal rosulate, petiolate, blade lyrate to pinnatifid, margins crenate-dentate;

cauline subsessile or petiolate, blade (base not auriculate), margins dentate or pinnatifid.

petiole 1–4(–10) cm;

blade (3–)4–22(–35) cm × 15–60(–80) mm, lobes 1–6(–9) each side, ovate or lanceolate, (smaller than terminal), terminal lobe broadly ovate, surfaces densely pubescent.

(distal) ± sessile;

blade oblong to lanceolate, similar to basal, (smaller distally).

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

sepals widely spreading or reflexed, oblong, lateral pair not saccate basally;

petals yellow, obovate to spatulate, claw differentiated from blade, (apex obtuse);

stamens tetradynamous;

filaments not dilated basally;

anthers oblong or ovate, (apex obtuse);

nectar glands not confluent, median glands present.

sepals 3–5 × 1.2–2 mm;

petals 5–10 × 2.5–4.5 mm;

filaments 3–5 mm;anthers 1–1.5 mm.

erect, stout.

(appressed to rachis, almost as thick as fruit), 2–4(–5) mm.

siliques, dehiscent, sessile, segments 2, linear, slightly torulose, terete or slightly 4-angled; (proximal segment not torulose, somewhat corky at maturity, 8–20-seeded; terminal segment indehiscent, 1- or 2-seeded, slightly swollen apically);

valves 3(–7)-veined, usually glabrous, rarely sparsely pubescent;

replum rounded;

septum complete;

ovules 10–22 per ovary; (style present);

stigma capitate, entire.

0.7–1.5(–1.7) cm × 1–1.7 mm;

valves 6–10 mm;

terminal segment 3–6 mm.

uniseriate, plump, not winged, globose;

seed coat (smooth to finely reticulate), mucilaginous when wetted;

cotyledons conduplicate.

0.9–1.5 mm diam. 2n = 14.

or biennials;

not scapose;

pubescent.

= 7.