Flora of North America species comparison

simple from base, erect, branched distally, (1–)2–8(–10) dm.

(withered by anthesis);

not rosulate;

petiole 1–4 cm;

blade 1- or 2-pinnatifid or pinnatisect (lobes ovate to oblong), 2–8(–10) cm, margins (of lobes) entire or dentate.

petiolate;

blade similar to basal, usually less divided, rarely undivided, (distal) often linear, bases not auriculate, margins entire.

petiolate or sessile;

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

considerably elongated in fruit;

rachis glabrous.

ebracteate, elongated or not in fruit.

sepals oblong-obovate, 1–1.8 × 0.5–0.8 mm;

petals white or lavender, spatulate to obovate, 2–3.5(–4) × 0.7–1.4 mm, claw 1–1.4 mm;

stamens 6;

filaments (median pairs) 1.5–2 mm, (glabrous);

anthers 0.4–0.5 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.

suberect to ascending, appressed to rachis, straight, (terete or slightly flattened), 1.5–4(–6) × 0.4–0.6 mm, glabrous.

broadly ovate or ovate-oblong, (4–)5–6.4(–7) × 3–4.5(–5.6) mm, apically broadly winged, apical notch 0.2 0.8 mm deep;

valves thin, smooth, not veined, glabrous;

style 0.1–0.5(–0.8) mm, usually included in, rarely subequaling, 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.

(reddish brown), ovate-oblong, 2–2.7(–3) × 1–1.5 mm, (3-lobed).

aseriate;

cotyledons accumbent or incumbent.

simple or absent.

= 16, 32.