Flora of North America species comparison

erect [ascending], often branched distally.

simple or few from base, 4–15 dm, pubescent proximally, trichomes simple and long-stalked, 2-rayed, mixed with smaller, dendritic ones.

basal and cauline;

petiolate or sessile;

basal (withered with age), rosulate, petiolate, blade margins entire, dentate to sinuate, or runcinate;

cauline subsessile or sessile [shortly petiolate], blade margins entire [dentate to sinuate].

caducous;

petiole to 3 cm;

blade spatulate to oblanceolate, 1.8–3 cm × 2–4 mm, margins dentate, sinuate, incised, or runcinate, surfaces pubescent, trichomes stalked, forked and dendritic, mixed with fewer, simple ones.

(distal) sessile;

blade linear, 3–9.2 cm × 0.8–5 mm, surfaces glabrous or glabrate.

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

secund, 1.6–7.9dm in fruit.

(usually actinomorphic, rarely zygomorphic, cup-shaped);

sepals erect, oblong to ovate, lateral pair slightly to strongly saccate basally, (usually pubescent, rarely glabrous);

petals white (lavender or purple apically), spatulate to oblanceolate, (± longer than sepals), claw undifferentiated from blade, (apex obtuse);

stamens slightly tetradynamous;

filaments dilated basally;

anthers ovate to oblong, (apex obtuse);

nectar glands confluent, subtending bases of stamens.

(slightly zygomorphic, receptacle asymmetric);

sepals purple or green, oblong, 4–9 × 1.5–4 mm, (adaxial largest);

petals lavender to purple apically, spatulate, (4–)5–7(–12) × 1–3 mm, (adaxial largest);

filaments 4–9 mm;

anthers 1–1.2(–2) mm.

erect, descending, ascending, or divaricate-ascending, slender, (glabrous).

slightly descending, recurved, 5–13 mm.

siliques, sessile or shortly stipitate, linear, not torulose, straight or curved, terete or latiseptate;

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

replum rounded;

septum complete;

ovules 40–250 per ovary;

style distinct or obsolete;

stigma capitate.

pendent, straight or nearly so, 5–10 cm × 1–1.2 mm, slightly latiseptate;

valves glabrous;

septum transparent;

ovules 150–250 per ovary;

style 0.5–1.2 mm.

uniseriate or biseriate, plump or flattened, winged or not, oblong to ovate;

seed coat (reticulate-areolate), mucilaginous or not when wetted;

cotyledons accumbent or incumbent.

biseriate, plump, not winged, oblong, 0.7–1.3x 0.4–0.5 mm;

seed coat mucilaginous when wetted;

cotyledons incumbent.

= 8.

= 16.