Flora of North America species comparison

erect or ascending, unbranched or branched basally and distally.

basal and cauline;

petiolate or sessile;

basal rosulate, petiolate, blade margins often entire, sometimes dentate, rarely sinuate;

cauline blade (base not auriculate, sagittate), margins usually entire, rarely dentate.

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

sepals erect, oblong, (pubescent);

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

stamens slightly tetradynamous;

filaments not dilated basally;

anthers oblong, (apiculate);

nectar glands confluent, subtending bases of stamens.

ascending to subdivaricate, slender (terete).

siliques, dehiscent, sessile or subsessile, linear, smooth, terete;

valves each with prominent midvein and marginal veins, secondary veins anastomosing and distinct or obscure, glabrous;

replum rounded;

septum complete;

ovules 70–150 per ovary; (style obsolete or distinct);

stigma capitate.

biseriate, plump, not winged, narrowly oblong;

seed coat (minutely reticulate), not mucilaginous when wetted;

cotyledons incumbent.

= 8.