Flora of North America species comparison

(sometimes absent), usually petiolate or sessile, sometimes subsessile;

blade base not auriculate, margins usually entire or dentate, rarely lobed.

short-stalked or sessile, stellate, forked, dendritic, malpighiaceous, or simple, rarely absent.

usually ebracteate, usually elongated in fruit.

actinomorphic;

sepals erect [ascending to spreading], lateral pair seldom saccate basally;

petals white, pink, or purple [yellow], claw present, distinct or obscure;

filaments unappendaged, not winged;

pollen 3-colpate.

silicles or siliques, usually dehiscent, unsegmented, terete or latiseptate [angustiseptate];

ovules 2–80[–numerous] per ovary;

style distinct or obsolete;

stigma entire or strongly 2-lobed.

usually biseriate or uniseriate (aseriate in Euclidium);

cotyledons accumbent or incumbent.

= 28.