Flora of North America species comparison

erect, usually branched distally, rarely unbranched.

basal and cauline;

petiolate or sessile;

basal not rosulate, petiolate, blade similar to cauline;

cauline petiolate or sessile, blade (base not auriculate), margins entire, dentate, sinuate, or pinnatifid.

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

sepals erect, oblong, (unequal), lateral pair subsaccate basally;

petals white or yellow (often veins purplish), spatulate, (slightly exceeding sepals, margins crisp), claw well-differentiated from blade, (apex obtuse);

stamens in 3 unequal pairs;

filaments not dilated basally;

anthers ovate to oblong, (apiculate);

nectar glands lateral, semi-annular, subtending lateral stamens, median glands absent.

usually reflexed, rarely divaricate, slender or stout.

sessile, linear, smooth, latiseptate;

valves each with prominent midvein;

replum rounded or slightly flattened;

septum complete;

ovules (12–)16–28(–34);

style distinct, (well-developed, adnate with valves and replum apex);

stigma subentire.

uniseriate, flattened, winged, oblong;

seed coat not mucilaginous when wetted;

cotyledons incumbent.

= 7.