Flora of North America species comparison

erect, unbranched basally, often branched distally.

basal and cauline;

petiolate or sessile;

basal rosulate, petiolate, margins usually dentate, sinuate, repand, or pinnatifid, rarely entire;

cauline blade (base auriculate or sagittate [amplexicaul]), margins dentate or entire.

(corymbose), considerably elongated in fruit.

sepals erect, oblong or linear, (margins membranous);

petals usually yellowish or creamy white, rarely pink [purplish], usually narrowly spatulate or linear-oblanceolate, rarely linear, claw not differentiated from blade, (apex obtuse);

stamens (erect), tetradynamous;

filaments not dilated basally;

anthers narrowly oblong [linear], (apex obtuse);

nectar glands confluent, subtending bases of stamens, lateral glands annular, median glands present.

erect [divaricate], (appressed to rachis), slender.

siliques, dehiscent, sessile, linear, smooth, often subterete-quadrangular, (leathery);

valves each with prominent midvein, glabrous;

replum rounded;

septum complete, (membranous, veinless);

ovules 130–200 per ovary; (style distinct, short, stout);

stigma capitate, (subentire).

biseriate, flattened, not winged or, rarely, narrowly winged, oblong or subglobose [elliptic, orbicular];

seed coat not mucilaginous when wetted;

cotyledons accumbent.

= 6, 8.