Flora of North America species comparison

absent.

cylindrical, (not fragile), relatively short, (not fleshy).

(simple or several from base), erect or decumbent, (flexuous or straight, narrowly winged-angled), unbranched or branched distally, (1.4–)2–4.5(–5.3) dm.

erect, unbranched, (0.8–)1.5–5.5(–8) dm.

(soon withered), not rosulate.

simple or 5–9(–31)-foliolate, to 30 cm, (thin, veins raised), leaflets petiolulate or sessile;

petiole (1–)2–7(–10) cm;

lateral leaflets petiolulate or sessile, blade similar to terminal or smaller, orbicular, ovate, or obovate, margins crenate or repand;

terminal leaflet (petiolule to 1.5 cm), blade orbicular or broadly obovate, 0.3–2 cm diam., base usually rounded, rarely subreniform or cuneate, margins repand, (apex rounded).

3–9, middle ones 5–9-foliolate, petiolate, leaflets petiolulate or subsessile;

petiole 1–3 cm, base not auriculate;

lateral leaflets similar to terminal, blade often smaller, with oblique base, distal leaflets subsessile, blade smaller and narrower distally;

terminal leaflet (petiolule 0.2–0.8 cm), blade usually broadly ovate to narrowly lanceolate, rarely oblong, 0.7–2 cm × 2–10 mm, base cuneate to rounded, margins repand, crenate, or 3-lobed.

2–12(–18), pinnatisect, petiolate, leaflets petiolulate or sessile, (2–17 cm including petiole, thin, veins raised);

petiole base not auriculate;

lobes or leaflets (4–7(–13) each side of rachis), petiolulate or sessile and decurrent, blade similar to terminal lobe or leaflet, margins usually entire, rarely dentate;

terminal lobe or leaflet (petiolulate or sessile), blade linear, oblong, ovate, or lanceolate, 1–2.5(–3.5) cm × 5–8(–10) mm, (surfaces glabrous).

ebracteate, (rachis slightly to strongly flexuous or geniculate).

ebracteate.

sepals oblong, 2–3.5 × 0.7–1.2 mm, lateral pair not saccate basally;

petals white, linear, 6–8 × 0.7–1 mm;

filaments: median pairs 4–5 mm, lateral pair 3.5–4 mm;

anthers oblong, 0.7–1 mm.

sepals (erect or spreading), oblong or ovate, (2.5–)3–5(–6) × 1–2 mm, lateral pair saccate basally;

petals usually purple or lilac, rarely white, obovate, (6–)8–15(–18) × 3–7.5(–10) mm, (clawed, apex rounded or emarginate);

filaments: median pairs 5–10 mm, lateral pair 3–6 mm;

anthers narrowly oblong, (0.8–)1.2–2 mm.

horizontal to divaricate or ascending, (3–)4–9(–12) mm.

erect-ascending or subdivaricate, (5–)12–25(–30) mm.

linear, (2.5–)3–4.6 cm × 1.7–2.1 mm;

ovules 14–22 per ovary;

style 1–3 mm.

linear, (1.6–)2.5–4.5(–5) cm × (1.2–)1.5–2.3 mm;

ovules 20–30 per ovary;

style (0.5–)1–2.2(–2.7) mm, (stout).

dark brown, oblong, 2–2.5 × 0.9–1.2 mm.

light brown, oblong, 1.2–1.8(–2) × 1–1.4 mm.

= 16.