Flora of North America species comparison

cylindrical, slender, to 2 mm diam.

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

erect, unbranched, (1.5–)2.5–8.5(–10) dm, sparsely to densely hirsute at base.

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

3 (or 5)-foliolate, (4–)7–20(–22) cm, leaflets petiolulate or subsessile;

petiole (2–)4–12(–14) cm;

lateral leaflets subsessile, blade similar to terminal, larger or smaller in size;

terminal leaflet petiolulate [(0.3–)0.5–1.5 cm], blade ovate to broadly lanceolate, 1.5–7(–9) cm, base usually cuneate, rarely subreniform or obtuse, margins 3–5(–7)-lobed or -toothed, surfaces puberulent.

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 or) 4–8, 3 (or 5)-foliolate, petiolate, leaflets petiolulate or sessile;

petiole 1–4 cm, base not auriculate;

lateral leaflets sessile, blade similar to terminal, smaller, margins usually dentate, rarely entire;

terminal leaflet sessile or petiolulate, blade broadly ovate to narrowly lanceolate, 2–7 cm × 6–40 mm, margins minutely pubescent.

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.

ebracteate.

sepals oblong, 2.5–4 × 1.3–2 mm, lateral pair saccate basally;

petals usually white, rarely pinkish, obovate, 8–15 × 4–8 mm (clawed, apex rounded or emarginate);

filaments: median pairs 3.5–6 mm, lateral pair 2–3.5 mm;

anthers oblong, 0.8–1.2 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.

ascending to divaricate, (9–)12–25 mm.

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

linear, 1.5–3.2 cm × 1.4–2 mm;

ovules 10–16 per ovary;

style (0.5–)1–4 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, 1.8–2.3 × 1–1.2 mm.

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

= 40.

= 16.