Flora of North America species comparison

erect, branched distally.

basal and cauline;

petiolate or sessile;

basal (soon withered), not rosulate, petiolate, blade margins pinnatifid, runcinate, sinuate, or dentate;

cauline blade (base auriculate, sagittate, or amplexicaul), margins entire or denticulate.

sessile [petiolate];

blade base auriculate [not auriculate], margins usually entire [dentate].

simple or absent.

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

ebracteate, elongated in fruit.

sepals oblong to ovate, lateral pair subsaccate basally;

petals oblong to oblanceolate, (slightly longer than sepals), claw undifferentiated from blade, (apex obtuse);

stamens tetradynamous;

filaments not dilated basally;

anthers oblong, (apex obtuse);

nectar glands (4) lateral, and (2) median (sometimes obscurely confluent with lateral).

actinomorphic;

sepals erect or ascending [spreading], lateral pair not saccate or subsaccate basally;

petals yellow [white], claw usually present, rarely absent, obscure;

filaments unappendaged, not winged;

pollen 3-colpate.

appressed to rachis, stout.

silicles, sessile, obpyriform to clavate-obcordiform, (woody, broadest distal to middle), slightly angustiseptate; (seed-bearing locule basal, 1 (or 2)-seeded, distal 2 locules seedless);

replum rounded;

ovules 2 per ovary;

style distinct, (flattened, triangular);

stigma capitate.

siliques or silicles (samaroid), indehiscent, unsegmented, angustiseptate, (woody);

ovules 1 or 2 per ovary;

style usually absent, rarely distinct;

stigma entire.

plump, not winged, oblong to ovoid;

seed coat not mucilaginous when wetted;

cotyledons incumbent.

aseriate;

cotyledons accumbent or incumbent.

= 7.