Flora of North America species comparison

erect [decumbent], often branched distally.

basal and cauline;

petiolate;

basal (often withered by anthesis or fruiting), rosulate, long-petiolate, blade margins crenate, dentate, or sinuate;

cauline shortly petiolate, blade margins dentate.

petiolate or sessile;

blade base auriculate or not, margins entire or dentate [pinnately lobed].

absent or simple.

elongated in fruit.

usually ebracteate, often elongated in fruit.

sepals erect, oblong, lateral pair not saccate basally, (glabrous);

petals oblanceolate, (longer than sepals), claw obscurely differentiated from blade, (apex obtuse);

stamens slightly tetradynamous;

filaments not dilated basally;

anthers ovate or oblong, (apex obtuse);

nectar glands confluent, subtending bases of stamens.

actinomorphic;

sepals erect or ascending [spreading], lateral pair not saccate basally;

petals white [pink, purple], claw present, distinct or indistinct (often short);

filaments unappendaged, not winged;

pollen 3-colpate.

divaricate or ascending, stout (almost as broad as fruit [slender, narrower than fruit]).

siliques, sessile, linear [oblong], torulose or subtorulose, terete, subterete, or 4-angled;

valves each with prominent midvein and distinct marginal veins, glabrous [scabrous];

replum rounded;

septum complete;

ovules [4–]6–22 per ovary;

style obsolete or distinct (to 6 mm);

stigma capitate, entire.

silicles or siliques, dehiscent [indehiscent], unsegmented, terete, 4-angled, or angustiseptate [latiseptate];

ovules [4–]6–22[–numerous];

style distinct or obsolete;

stigma entire.

plump, not winged, oblong;

seed coat (longitudinally striate), not mucilaginous when wetted;

cotyledons incumbent.

uniseriate (striate or coarsely reticulate);

cotyledons accumbent or incumbent.