Flora of North America species comparison

cylindrical, slender, to 2 mm diam.

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

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

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

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.

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).

(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.

2–5, 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, 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 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.

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

ascending to divaricate, 10–33(–41) mm.

linear, 1.5–3.2 cm × 1.4–2 mm;

ovules 10–16 per ovary;

style (0.5–)1–4 mm.

linear, 2.2–5.4(–6) cm × 2–3 mm;

ovules 12–22 per ovary;

style 2–5(–6) mm.

dark brown, oblong, 1.8–2.3 × 1–1.2 mm.

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

= 40.

= 32.