Flora of North America species comparison

absent.

(tuberiform, fragile) moniliform, segments fusiform, 3–6 mm diam. (fleshy).

erect, (angled, sometimes flexuous), unbranched basally, usually branched distally, (1.2–)2–6.5(–9) dm.

erect, unbranched, 1.2–3(–4) dm, glabrous or pubescent.

(often withered by flowering), rosulate, similar to cauline, with fewer distal leaflets.

3-foliolate, to 24 cm, leaflets petiolulate or subsessile;

petiole (3–)5–12(–16) cm;

lateral leaflets subsessile or petiolulate (0.2–1 cm), blade similar to terminal leaflet or smaller;

terminal leaflet (petiolule) (0.2–)0.5–1.5(–2) cm, blade broadly ovate to rhombic-obovate, 1.5–6(–8) cm, base usually cuneate, rarely subtruncate, margins coarsely dentate to crenate or 3-lobed, surfaces puberulent or not.

9–24, (9–)13–25-foliolate, petiolate, leaflets petiolulate;

petiole 2–6 cm, base auriculate (auricles to 10 × 2.2 mm);

lateral leaflets similar to terminal, blade often smaller;

terminal leaflet (petiolule to 0.5 cm), blade orbicular, obovate, ovate, or lanceolate, 1–4(–5) cm × 5–17 mm, margins entire or 3–5(–9)-toothed or -lobed.

2 (or 3), 3-foliolate (usually alternate, rarely opposite, different in morphology from rhizomal), petiolate, leaflets petiolulate or sessile;

petiole 0.5–2 cm, base not auriculate;

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

terminal leaflet sessile or petiolulate, blade narrowly lanceolate to narrowly oblong or oblong-lanceolate, 2–7 × 0.3–0.6 cm, margins minutely puberulent.

ebracteate.

ebracteate.

sepals oblong, 1.2–2(–2.5) × 0.7–1(–1.2) mm, lateral pair not saccate basally;

petals (rarely absent), white, oblanceolate, 1.5–4(–5) × 0.6–1.2 mm;

filaments 2–3(–4) mm;

anthers ovate, 0.3–0.5 mm.

sepals oblong, 5–7.5 × 1–2 mm, lateral pair slightly saccate basally;

petals purple to pale pink, oblanceolate, 9–18 × 2–5 mm (clawed, apex rounded);

filaments: median pairs 5–10 mm, lateral pair 3.5–8 mm;

anthers linear, 1.5–3 mm.

divaricate or ascending, 3.5–12(–15) mm.

ascending to divaricate, 15–40 mm.

linear, (torulose), (1–)1.6–3(–3.5) cm × 0.9–1.5 mm; (valves glabrous or, rarely, pilose);

ovules 10–30 per ovary;

style 0.6–1.6(–2) mm.

linear, 2.5–4 cm × 1.5–2.5 mm;

ovules 8–12 per ovary;

style (5–)7–11 mm.

brown, oblong, 1.1–1.5 × 0.8–1 mm, (compressed, sometimes narrowly winged apically).

dark brown, oblong, 2–2.5 × 1–1.5 mm.

= 16.

= ca. 128.