Flora of North America species comparison

(simple or few to several from base), erect or ascending, unbranched.

(0.6–)1–2(–2.8) dm.

basal and cauline;

petiolate or sessile;

basal (persistent), rosulate, petiolate, blade margins usually lyrate-pinnatifid or pinnatisect, rarely entire or dentate;

cauline (0–4), sessile, blade margins entire or dentate.

petiole 0.2–2 cm;

blade lanceolate in outline, 0.5–3(–4) cm × 0.5–2.5 mm, margins usually lyrate-pinnatifid to pinnatisect, rarely dentate or entire;

lateral lobes acute.

0–3;

blade linear.

(corymbose, several-flowered).

(actinomorphic or zygomorphic);

sepals ascending to spreading, ovate, glabrous;

petals white, oblong or obovate, (equal to or longer than sepals, or lateral pair much larger), claw undifferentiated from blade, (apex obtuse);

stamens (6) tetradynamous, or (4) equal;

filaments dilated basally (appendaged);

anthers ovate;

nectar glands lateral, 1 on each side of lateral stamen, median glands absent.

actinomorphic;

sepals 0.2–0.6 × 0.2–0.4 mm;

petals oblong, 0.5–1.5 × 0.3–0.6 mm;

stamens 4, equal;

filaments 0.5–1 mm (basal appendage white, ca. 1/2 its length);

anthers 0.1–0.2 mm.

divaricate, slender.

3–6 mm.

(often divaricate), sessile, broadly obcordate to suborbicular, slightly keeled, angustiseptate (strongly compressed), (apex notched);

valves prominently veined, (apex narrowly winged), glabrous;

replum rounded;

septum complete;

ovules 4 per ovary;

style absent or not;

stigma capitate, entire.

3–3.5 × 3–5 mm;

style 0 m. Seeds 0.8–1.2 × 0.7–1 mm.

uniseriate, slightly compressed, not winged, broadly ovate;

seed coat (rugulose), copiously mucilaginous when wetted;

cotyledons accumbent.

= 9.

= 36.