Flora of North America species comparison

absent.

(tuberiform, fragile), globose to ovoid or suboblong, (3–)4–10 mm diam., (fleshy, deeply underground).

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

erect, unbranched, (2–)2.7–6(–7)dm, usually glabrous, rarely pubescent.

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

3 (or 5–7)-foliolate, sometimes simple, 8–25(–38) cm, leaflets petiolulate or subsessile;

petiole (5–)8–25(–32) cm;

lateral leaflets (when present) petiolulate to subsessile, blade similar to terminal, sometimes smaller;

terminal leaflet (petiolule (0.7–)2–5(–11) cm), blade (of simple leaf) ovate to orbicular to broadly cordate or reniform, (1.5–)2.5–7.5(–10) cm × (12–)20–90(–130) mm, base obtuse to cordate, margins entire or dentate to shallowly sinuate, (often with apiculae at veins ending at margin, sometimes minutely pubescent on veins).

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.

2–5, usually 3 (or 5)-foliolate, rarely simple, petiolate, leaflets petiolulate or sessile;

petiole 1–5(–9) cm, base not auriculate;

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

terminal leaflet sessile or petiolulate, blade usually broadly ovate to suborbicular or lanceolate, rarely narrowly oblong, 1–7 cm × (5–)10–47(–65) mm.

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 (erect to ascending), oblong, 3.5–4.5(–5.5) × 1.5–2(–2.5) mm, lateral pair saccate basally;

petals white to pale rose, often broadly obovate, 8–13(–15) × 4–8 mm (clawed, apex rounded);

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

anthers oblong, 1.2–1.7 mm.

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

ascending to divaricate, 10–33(–41) 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, 2.2–5.4(–6) cm × 2–3 mm;

ovules 12–22 per ovary;

style 2–5(–6) mm.

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

dark brown, oblong to broadly ovoid, 1.7–2.8 × 1.2–1.8 mm.

= 16.

= 32.