Flora of North America species comparison

erect, unbranched or branched (few) distally.

basal and cauline;

petiolate;

basal not rosulate, long-petiolate, (soon withered);

cauline petiolate, blade (base hastate, not auriculate), margins entire or proximalmost lobed.

(reflexed at anthesis, several-flowered, lax, proximal flowers sometimes bracteate), considerably elongated in fruit.

sepals ascending, narrowly lanceolate, lateral pair not saccate basally;

petals (ascending), white, linear, (only slightly longer than sepals, slightly crisped), claw obovate or oblanceolate, (distinctly wider than blade);

stamens subequal (well-exserted beyond petals);

filaments slightly dilated basally;

anthers linear, (apiculate, coiled after dehiscence);

nectar glands confluent, lateral annular or semi-annular, median glands present.

straight or curved upward, stout.

long-stipitate, linear, subtorulose, subterete or slightly compressed;

valves each with prominent midvein extending full-length;

replum rounded;

septum complete;

ovules 40–60 per ovary;

style obsolete or distinct;

stigma capitate, entire.

uniseriate, plump, winged distally, oblong;

seed coat not mucilaginous when wetted;

cotyledons obliquely accumbent.