Flora of North America species comparison

usually simple from base, (2–)3–8 dm, (retrorsely hispid).

erect, unbranched or branched.

basal and cauline; petiolate or subsessile;

basal not rosulate, petiolate, blade margins lyrately lobed or pinnatifid to pinnatisect;

cauline shortly petiolate or subsessile, blade (base not auriculate), margins dentate or lobed, (smaller and fewer-lobed than basal).

petiole 1–6 cm;

blade oblong, obovate, or oblanceolate in outline, lyrate or pinnatifid, sometimes undivided, 3–15(–22) cm × 10–50 mm, margins dentate, apex obtuse or acute;

lobes 1–4 each side, oblong or ovate, to 4 cm × 20 mm (smaller than terminal).

(distal) subsessile;

blade often undivided.

(corymbose, several-flowered), usually greatly elongated in fruit.

sepals 7–11 × 1–2 mm, sparsely pubescent;

petals yellow or creamy white (veins dark brown or purple), 15–25 × 4–7 mm, claw to 15 mm;

filaments (slender), 7–12 mm;

anthers 2–2.5 mm.

sepals erect, narrowly oblong [linear], lateral pair slightly saccate basally;

petals white, creamy white, yellow, pink, or purple [lilac] (usually with darker veins), broadly obovate [suborbicular], claw differentiated from blade, (± longer than sepals, apex obtuse or emarginate [rounded]);

stamens strongly tetradynamous;

filaments not dilated basally;

anthers oblong or oblong-linear, (apex obtuse);

nectar glands (4), median pair present.

divaricate or ascending, 7–25 mm, (straight).

divaricate, ascending, or spreading [reflexed].

cylindrical or narrowly lanceolate;

valvular segment 1–1.5 mm;

terminal segment (1.5–)2–11(–14) cm × (2.5–)3–8(–11) mm, (base rounded), strongly constricted between seeds (usually breaking), strongly ribbed, beak narrowly conical;

style 10–50 mm.

siliques or silicles, indehiscent, sessile, segments 2, (lomentaceous, often breaking into 1-seeded units), cylindrical, fusiform, lanceolate, or ovoid, [linear, oblong, ellipsoid], smooth or torulose to strongly moniliform, (constricted or not between seeds), terete or polygonal; (valvular segment seedless, rudimentary, or aborted, nearly as wide as pedicel; terminal segment several-seeded, corky);

valves glabrous, antrorsely scabrous, or hispid;

replum and septum not differentiated;

ovules 2–22 per ovary; (style slender);

stigma capitate, slightly 2-lobed.

(reddish brown or dark brown to black), oblong or ovoid, 2.5–3.5 × 1.8–2.5 mm.

uniseriate, plump, not winged, oblong, ovoid, or globose [subglobose];

seed coat (nearly smooth to reticulate), not mucilaginous when wetted;

cotyledons conduplicate.

= 9.

= 18.