Flora of North America species comparison

simple from base, erect, (paniculately) branched beyond base or distally, 2–6 dm.

(soon withered, often before anthesis);

not rosulate;

blade dentate to pinnatifid.

shortly petiolate to subsessile;

blade narrowly oblanceolate to linear, 1–3.3 cm × 1–4 mm, base attenuate, not auriculate, margins entire.

petiolate or sessile;

blade base auriculate or not, margins usually entire, dentate, or pinnately divided.

(often paniculate), considerably elongated in fruit;

rachis glabrous or puberulent, trichomes straight, cylindrical.

ebracteate, elongated or not in fruit.

sepals oblong, 0.7–0.8 × 0.3–0.4 mm;

petals (rudimentary), white, linear, 0.4–0.6 × 0.05–0.1 mm, claw absent;

stamens 4, median and lateral;

filaments 0.6–0.8 mm;

anthers ca. 0.2 mm.

actinomorphic;

sepals ascending to spreading, lateral pair not saccate basally;

petals white, yellow, pink, or purple [orange], claw usually present, sometimes absent, distinct;

filaments unappendaged, not winged;

pollen 3-colpate.

divaricate-ascending to horizontal, straight, (terete), 2–3.5 × 0.1–0.15 mm, puberulent adaxially.

orbicular to broadly elliptic, 1.8–2 × 1.7–1.8 mm, apically not winged, apical notch 0.05–0.1 mm deep;

valves thin, smooth, not veined, sparsely pilose;

style ca. 0.1 mm, equaling apical notch.

silicles, usually dehiscent, unsegmented, usually angustiseptate, rarely terete;

ovules 2(–4) per ovary;

style distinct, obsolete, or absent;

stigma entire or, rarely, 2-lobed.

oblong, 1–1.2 × 0.7–0.8 mm.

aseriate;

cotyledons accumbent or incumbent.

simple or absent.