Flora of North America species comparison

erect or ascending, unbranched or branched.

basal and cauline;

petiolate or subsessile;

basal not rosulate, petiolate, blade margins entire, dentate, or pinnatifid;

cauline petiolate or subsessile, blade margins usually entire or dentate, rarely sinuate [lobed].

(few- to several-flowered), considerably elongated in fruit.

sepals narrowly oblong [ovate], pubescent;

petals pink or purple [rarely white], oblanceolate [spatulate, oblong], (longer than sepals), claw undifferentiated from blade, (apex obtuse or rounded);

stamens tetradynamous, (erect);

filaments not dilated basally [sometimes median 4 connate in 2 pairs];

anthers oblong [ovate], (apiculate or not);

nectar glands (4), lateral, 1 on each side of lateral stamen, median glands absent.

ascending or divaricate, stout [slender] (about equal to fruits).

siliques, subsessile, linear, smooth [torulose], 4-angled [terete];

valves each with obscure [prominent] midvein, pubescent or glabrous;

replum rounded;

septum complete;

ovules 40–80 per ovary;

style obsolete;

stigma conical, 2-lobed (lobes connivent or connate, opposite replum).

uniseriate, plump or slightly flattened, not winged, oblong [ovate];

seed coat (reticulate), not mucilaginous when wetted;

cotyledons incumbent.

= 7.