Flora of North America species comparison

cylindrical, 3–6 mm diam., (distinctly constricted at intervals, non-uniform diam., fleshy, slightly fragile, with dentate leaf scars).

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

erect, unbranched, 0.9–3(–4) dm.

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

3-foliolate, 7–20 cm, leaflets petiolulate or subsessile;

petiole 4–15 cm;

lateral leaflets subsessile or petiolulate, blade often similar to terminal, base often oblique;

terminal leaflet (petiolule 0.2–1(–1.7) cm), blade broadly ovate to oblong, 2–7.5 cm × 12–37 mm, base cuneate to obtuse, margins coarsely dentate to sharply incised, or deeply cleft into 2 or 3 lobes (lobes dentate or incised, margins 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).

2 or 3, 3-foliolate, (rarely subopposite), petiolate, leaflets petiolulate or subsessile;

petiole (0.5–)1–4(–6.5) cm, base not auriculate;

lateral and terminal leaflets similar to rhizomal, distalmost sometimes much smaller.

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 (erect to ascending), oblong, 5–7 × 2–3 mm, lateral pair slightly saccate basally;

petals white or pink, oblanceolate, 10–17 × 3–6 mm, (not clawed, apex rounded);

filaments: median pairs 4–8 mm, lateral pair 3–6.5 mm;

anthers linear, 1.7–2.7 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.

(flowering ones) horizontal to divaricate or deflexed, 7–20 mm.

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

(undeveloped), linear-lanceolate, to 3 cm × 2 mm;

ovules 10–14 per ovary;

style 3.5–7 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).

not known.

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

= 120, 124, 132, 138, 156, 161, ca. 208.

= 16.