Flora of North America species comparison

(few from base), ascending, branched.

(0.3–)0.7–2.5(–3.5) dm.

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.

(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.

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.

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

stout, 1–2(–3) 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.

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.

uniseriate, flattened, not winged, oblong;

seed coat not mucilaginous when wetted;

cotyledons accumbent.

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