Flora of North America species comparison

(0.3–)0.7–2.5(–3.5) dm.

(few from base), ascending, branched.

basal and cauline;

petiolate or sessile;

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

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

subsessile or petiole to 0.3 cm;

blade oblanceolate, obovate, or oblong, (0.3–)0.7–2(–2.2) cm × (2–)4–7 mm, margins entire or with a tooth on each side, apex obtuse, surfaces uniformly pubescent, trichomes cruciform with fewer, 3-rayed ones.

2–5;

blade similar to but smaller than basal, (base cuneate, not auriculate).

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

sepals 0.6–1 × 0.4–0.6 mm;

petals spatulate, 1.3–1.7 × 0.5–0.8 mm;

filaments 0.5–0.9 mm;

anthers 0.1–0.2 mm.

(cleistogamous and/or chasmogamous);

sepals suberect, oblong, lateral pair not saccate basally, (glabrous or pubescent);

petals white, (usually rudimentary, or well-developed and exceeding sepals, rarely absent), spatulate or oblong, claw indistinct;

stamens subequal;

filaments slightly dilated or not basally;

anthers ovate to globose;

nectar glands lateral, each side of lateral stamens.

stout, 1–2(–3) mm.

recurved or reflexed, slender or stout, (glabrous or pubescent).

elliptic, obovate, or orbicular, flattened or slightly twisted;

valves thickened, veins often prominent, glabrous or uniformly pubescent, trichomes subsessile or short-stalked, cruciform and 3-rayed, sometimes mixed with stouter, simple or forked, subsetiform ones to 0.6 mm, not hooked;

septum complete, (membranous);

ovules 6–12 per ovary;

style 0.1–0.2 mm.

(pendulous), silicles, indehiscent or very tardily dehiscent, sessile, usually orbicular or obovate to elliptic, rarely oblong, twisted or flattened, latiseptate;

valves each not veined or veins prominent, pubescent or glabrous;

replum rounded;

septum absent or complete;

ovules 2–12 per ovary;

style obsolete or distinct;

stigma capitate.

often 2 or more, 0.9–1.2 × 0.6–0.8 mm.

uniseriate, flattened, not winged, oblong;

seed coat not mucilaginous when wetted;

cotyledons accumbent.