Flora of North America species comparison

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

few to several from base, prostrate or decumbent, branched, (0.2–)0.4–3(–4.6) 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.

rosulate;

petiole (0.3–)0.6–2.5(–3.2) cm;

blade spatulate to oblanceolate or linear, pinnatifid or lobed (lobes 3–9 pairs, ovate to oblong), (0.7–)1.3–5.2(–6) cm × 3–8 mm, margins (of lobes) entire.

petiolate;

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

petioles 0.1–0.5 cm;

blade obovate to spatulate or oblanceolate, (0.6–)1–1.8(–2.3) cm × 2–8(–14) mm, base attenuate-cuneate, not auriculate, margins dentate-sinuate to crenate orentire.

considerably elongated in fruit;

rachis glabrous.

(corymbose to subcapitate), slightly elongated in fruit;

rachis glabrous.

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.

sepals obovate-oblong, 1–2 × 0.6–1 mm;

petals yellow (rarely creamy white at early anthesis), spatulate, (1.8–)2–2.8(–3) × 0.6–1 mm, claw 0.5–1 mm;

stamens 6;

filaments (median pairs) 1.2–2 mm, (glabrous);

anthers 0.4–0.5 mm.

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

divaricate to horizontal, straight or slightly sigmoid, (terete), (2.7–)3–4.4(–5) × 0.2–0.3 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.

usually narrowly to broadly ovate, rarely suborbicular, (2.2–)2.5–3.8(–4.2) × (1.6–)2.2 3.2(–3.5) mm, apically divergently winged, apical notch 0.2–0.6 mm deep;

valves thin, smooth, moderately reticulate-veined, usually glabrous, rarely pubescent;

style 0.7–1.6 mm, exserted beyond apical notch.

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

ovate, 1–1.6 × 0.6–0.9 mm.

= 16, 32.

= 32.