Flora of North America species comparison

erect, unbranched or branched distally.

1.5–6 dm.

basal and cauline;

petiolate or sessile;

basal (often withered by anthesis or fruiting), not or, rarely, rosulate, shortly petiolate, blade margins subentire, dentate, pinnatifid, or pinnatisect [rarely entire];

cauline sessile, blade (base usually auriculate), margins entire, dentate, or pinnatifid to pinnatisect.

blade oblanceolate, 1.5–4 cm, margins sinuate-dentate to runcinate-pinnatifid, surfaces usually glabrous, rarely sparsely hirsute, trichomes whitish, 0.3–0.4 mm.

blade lance-ovate to lanceolate, widest at base, base auriculate-clasping, auricles extending around stem (at least some leaves).

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

internodes 9–18 mm in fruit.

sepals ascending, oblong to ovate, lateral pair not saccate basally;

petals white to purplish, spatulate to oblong, (subequaling or longer than sepals), claw not differentiated from blade;

stamens slightly tetradynamous;

filaments slightly dilated basally;

anthers ovate;

nectary glands each side of lateral stamen or semi-annular, median glands absent.

often recurved, sometimes divaricate-ascending, slender.

weakly ascending, straight or nearly so, geniculately-reflexed apically, (proximal) 7–18 mm.

(pendulous), sessile, cymbiform, orbicular, obovate [ovate, elliptic], smooth, strongly latiseptate;

valves each with prominent midvein, glabrous or pubescent;

replum entire or crenate, often perforated, (winged, wing flattened, with radiating rays);

septum obsolete;

ovule 1 per ovary;

style distinct (relatively short) or obsolete;

stigma entire.

flat, orbicular, (7–10 mm wide);

valves pubescent or glabrous, trichomes pointed, ± 0.2 mm;

wing entire or with undulate margins, rays distinct, ± 0.1 mm wide.

aseriate, flattened, not winged, elliptical to orbicular;

seed coat not mucilaginous when wetted;

cotyledons accumbent.