Flora of North America species comparison

cylindrical, slender, 1–3 mm diam.

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

erect, unbranched or rarely branched distally, (0.8–)1–2.5(–3.5) dm.

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

simple or 3-foliolate, (1.5–)3–8 cm, leaflets petiolulate or subsessile;

petiole (1–)2–6 cm;

lateral leaflets subsessile, blade similar to terminal, much smaller;

terminal leaflet petiolulate (to 1 cm), blade reniform to cordate, (0.5–)1–2 cm, base cordate, margins entire or 3-lobed.

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.

3–7, 3-foliolate (or distalmost simple), petiolate, leaflets petiolulate or sessile;

petiole 0.7–3.5 cm, base auriculate (auricle 0.7–5 mm);

lateral leaflets sessile or petiolulate (to 0.5 cm), blade oblong to ovate or oblong;

terminal leaflet (petiolule 0.5–1 cm), blade broadly ovate to suborbicular or reniform, 1.5–4 cm × 15–35 mm, margins often 3 or 5-lobed (lobe apex minutely apiculate, glabrous on margin).

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, 2.5–3 × 1–1.5 mm, lateral pair not saccate basally;

petals white, oblanceolate, 6–8 × 2–3 mm (not clawed, apex obtuse to subemarginate);

filaments: median pairs 3.5–4 mm, lateral pair 2–2.5 mm;

anthers ovate, ca. 0.7 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-ascending, (7–)10–17 mm.

ascending to divaricate, 15–40 mm.

linear, (1.5–)2–3.5(–4) cm × 1.3–1.7 mm;

ovules 10–16 per ovary;

style 2–4 mm.

linear, 2.5–4 cm × 1.5–2.5 mm;

ovules 8–12 per ovary;

style (5–)7–11 mm.

brown, oblong, 1.7–2 × 1–1.2 mm.

dark brown, oblong, 2–2.5 × 1–1.5 mm.

= ca. 128.