Flora of North America species comparison

few to several from base, erect to ascending or decumbent, branched distally, 1–4.5(–7) dm.

simple from base (caudex branch), erect to ascending, unbranched distally, (0.1–)0.3–0.8 dm.

(soon withered);

not rosulate;

petiole 0.5–4(–6) cm;

blade 1- or 2-pinnatisect, 1–6(–8) cm, margins (of lobes) entire or dentate (sometimes deeply lobed).

not rosulate;

petiole often undifferentiated, (expanded base to 2 mm);

blade (somewhat fleshy), linear to linear-oblanceolate (when margins entire), or spatulate in outline (when apically 3–5-lobed, lobes obovate to oblong), 3–12(–15) cm × 5–15 mm, margins entire.

shortly petiolate to subsessile;

blade similar to basal, smaller and less divided distally, lobes lanceolate to oblong or elliptic, 1.5–3.5(–4.5) cm ×5–12 mm, base not auriculate, margins (of lobes) entire, serrate, or incised.

sessile;

similar to basal, smaller, base not auriculate.

elongated in fruit;

rachis glabrous or pubescent, trichomes straight, cylindrical.

slightly elongated in fruit;

rachis puberulent, trichomes straight or curved, cylindrical.

sepals (tardily deciduous), ovate, 0.5–0.7(–0.9) mm;

petals white, elliptic to linear, 0.4–0.5 × ca. 0.1 mm, claw absent;

stamens 2, median;

filaments 0.3–0.6 mm;

anthers 0.1–0.2 mm.

sepals orbicular to broadly obovate, 1.5–2(–2.5) × 1–1.5(–2) mm;

petals white to pale purple, suborbicular to obovate, 2–3.5 × 1.5–2.5(–2.8) mm, claw to 0.5 mm;

stamens 6;

filaments 1.5–1.8 mm, (glabrous);

anthers 0.3–0.5 mm.

divaricate to horizontal, straight slightly recurved, (terete), 1.4–2.5(–4) × 0.15–2 mm, glabrous or sparsely pubescent adaxially.

divaricate-ascending to subhorizontal, straight or slightly curved, (not winged), (2.5–)3–5(–6.5) × 04–0.5 mm, densely puberulent throughout.

schizocarpic, didymous, 1.3–1.7 × 2–2.5 mm, apically not winged, apical notch 0.2–0.4 mm deep;

valves thick, rugose, strongly veined, glabrous;

style absent or obsolete, included in apical notch.

ovate, 2.5–3.5(–4) × 2–2.5(–3) mm, apically winged, apical notch 0.05–0.2 mm deep;

valves thin, smooth, not veined, glabrous;

style 0.3–0.6 mm, exserted beyond apical notch.

ovate, 1–1.2 × 0.7–0.8 mm.

ovate, 1.2–1.5 × 0.9–1.1 mm.

= 32.