Flora of North America species comparison

(few from base), ascending, branched.

(0.2–)0.5–3(–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.

petiole 0.1–0.5 cm;

blade oblanceolate, obovate, or oblong, 0.3–1.5(–2) cm × (1–)2–6(–8) mm, margins entire or dentate, apex acute to obtuse, surfaces uniformly pubescent, trichomes cruciform and 3-rayed, adaxially sometimes mixed with coarse, simple ones.

1–6;

blade similar and equaling or smaller than basal.

(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 0.5–1 × 0.3–0.7 mm;

petals oblong, 1.5–3 × 0.5–1 mm;

filaments 0.4–0.6 mm;

anthers (0.05–)0.1–0.2(–0.25) mm.

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

slender, (1.5–)2–4(–6) 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.

usually orbicular to obovate, rarely broadly oblong, 1-locular, not twisted;

valves thin, veins sometimes prominent, usually pubescent, rarely glabrous, trichomes simple, to 0.5 mm, hooked (sometimes restricted to margins, or mixed with smaller, sessile, cruciform or 3-rayed ones);

septum absent;

ovules 2(–4) per ovary;

style 0.05–0.2 mm.

uniseriate, flattened, not winged, oblong;

seed coat not mucilaginous when wetted;

cotyledons accumbent.

1, (0.8–)0.9–1.1(–1.2) × (0.5–)0.7–0.9(–1) mm.

= 26.