Flora of North America species comparison

erect, unbranched basally, often branched distally.

basal and cauline; petiolate or sessile;

basal rosulate, petiolate, margins usually dentate, sinuate, repand, or pinnatifid, rarely entire;

cauline blade (base auriculate or sagittate [amplexicaul]), margins dentate or entire.

blades spatulate, oblanceolate, or oblong, (4–)5–12(–15) cm × 10–30 mm, apex obtuse, surfaces usually pubescent, rarely glabrous.

blade lanceolate, oblong-elliptic, or ovate, 2–9(–12) cm × (5–)10–25(–40) mm, apex acute.

(corymbose), considerably elongated in fruit.

sepals (2.5–)3–5 × 0.5–1.2 mm, glabrous;

petals 5–8.5 × 1.3–1.7 mm;

filaments slender, median pairs 3.5–6.5 mm, lateral pair 2.5–4.5 mm;

anthers 0.7–1.5 mm.

sepals erect, oblong or linear, (margins membranous);

petals usually yellowish or creamy white, rarely pink [purplish], usually narrowly spatulate or linear-oblanceolate, rarely linear, claw not differentiated from blade, (apex obtuse);

stamens (erect), tetradynamous;

filaments not dilated basally;

anthers narrowly oblong [linear], (apex obtuse);

nectar glands confluent, subtending bases of stamens, lateral glands annular, median glands present.

appressed to rachis, (6–)7–16(–20) mm, glabrous.

erect [divaricate], (appressed to rachis), slender.

(3–)4–10(–12.5) cm × 0.7–1.5 mm;

style 0.5–0.8(–1) mm.

siliques, dehiscent, sessile, linear, smooth, often subterete-quadrangular, (leathery);

valves each with prominent midvein, glabrous;

replum rounded;

septum complete, (membranous, veinless);

ovules 130–200 per ovary; (style distinct, short, stout);

stigma capitate, (subentire).

0.6–1.2 × 0.5–0.9 mm.

biseriate, flattened, not winged or, rarely, narrowly winged, oblong or subglobose [elliptic, orbicular];

seed coat not mucilaginous when wetted;

cotyledons accumbent.

= 6, 8.

= 12, 16, 32.