Flora of North America species comparison

absent.

absent (caudex usually with slender, rarely stout, rhizomelike branches).

erect, unbranched or, rarely, branched, 0.5–1.6(–3.5) dm.

erect to ascending, branched (several), 0.1–0.8(–1.4) dm, glabrous.

(7 or) 9–21-foliolate, (thick, veins impressed);

leaflets petiolulate or sessile;

lateral lobes or leaflets similar to terminal;

terminal lobe or leaflet blade orbicular, broadly ovate to lanceolate, base rounded to cuneate, margins usually entire.

rosulate, simple, (0.6–)1.2–5(–7) cm;

petiole (3–)1–3.5(–5.5) cm;

blade usually ovate to oblong, rarely oblanceolate to obovate, (0.4–)0.8–1.7(–2.5) cm × (2–)5–10(–16) mm, base cuneate to obtuse, margins usually entire, rarely repand or obtusely small-toothed (apex obtuse).

2–4(–7), pinnatisect or pinnately compound, (7 or) 9–21-foliolate, (thick, veins impressed), petiolate, leaflets petiolulate or sessile;

petiole base not auriculate;

lobes or leaflets (of proximal leaves) (4–)7–10 each side of rachis, fewer distally, distal leaves with 4 or 5 lobes or leaflets each side of rachis;

terminal leaflet petiolulate or sessile, blade (or lobe) narrowly lanceolate to lanceolate, base cuneate, margins entire.

0 or 1 (or 2), simple, shortly petiolate;

petiole base not auriculate;

blade similar to basal leaves, much smaller.

ebracteate.

ebracteate.

sepals oblong or ovate, 3.6–4.4 mm, lateral pair saccate basally, (green with hyaline margins);

petals white-lilac, 9–12.3 × 4.8–6.8 mm, (clawed, apex rounded or emarginate);

filaments: median pairs 3.5–4.5 mm, lateral pair 2–3 mm;

anthers narrowly oblong, 0.9–1.4 mm.

sepals oblong, 2–3(–4) × 0.8–1.5(–2) mm, lateral pair not saccate basally;

petals white, oblanceolate, 4–5.5(–7) × 1.3–2(–2.5) mm (not clawed, apex rounded or emarginate);

filaments: median pairs 2.5–4 mm, lateral pair 2–3 mm;

anthers oblong, 0.5–0.9 mm.

erect-ascending, 5–15 mm.

ascending to erect, 3–6(–8) mm.

linear, 1–1.8 cm × ca. 1.5 mm;

ovules ca. 16 per ovary;

style ca. 1 mm, (stout).

linear, (0.8–)1.3–2.8(–3.7) cm × 1.3–2 mm;

ovules 8–18 per ovary;

style 0.5–3 mm.

brown, oblong, ca. 1.5 mm.

brown, oblong, 1.5–2 × 0.9–1.2 mm.

= 56, 60, 64, 80–100.

= 16.