Flora of North America species comparison

absent.

slender, to 2 mm diam.

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

usually procumbent, sometimes erect, (not flexuous), unbranched or branched, (1–)1.5–3(–5) dm.

(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.

(soon withered), not rosulate.

absent.

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.

simple, petiolate;

petiole (0.3–)0.5–2.5(–4) cm, base not auriculate;

blade oblong, ovate, suborbicular, or cordate, (0.5–)1–4.5(–5.5) cm × (5–)10–40(–54) mm, base cordate, rounded, or truncate, margins entire, repand, or sinuate, (distally with shorter petiole, blade 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 × 1–1.7 mm, lateral pair not saccate basally;

petals white, broadly oblanceolate, spreading, 5–7(–8) × 2–3 mm, (not clawed, apex rounded);

filaments: median pairs 3.5–4.5 mm, lateral pair 2.7–3.5 mm;

anthers oblong, 0.8–1.2 mm.

erect-ascending, 5–15 mm.

divaricate to ascending, (6–)10–15(–20) mm.

linear, 1–1.8 cm × ca. 1.5 mm;

ovules ca. 16 per ovary;

style ca. 1 mm, (stout).

linear, (torulose), 1–1.5(–2) cm × 0.8–1.1 mm;

ovules 40–80 per ovary;

style 1.5–2.5 mm.

brown, oblong, ca. 1.5 mm.

brown, oblong to ovoid, 0.9–1.1 × 0.5–0.6 mm.

= 56, 60, 64, 80–100.