Flora of North America species comparison

(tuberiform, fragile), 4–9(–11) mm diam., (fleshy).

slender, 0.5–1 mm diam.

erect or decumbent at base, unbranched, 2–6(–7.5) dm.

erect to ascending, branched, 1.5–2 dm.

5–13-foliolate, (4–)10–18(–25) cm, leaflets petiolulate or subsessile;

petiole (3–)5–12(–17) cm;

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

terminal leaflet (petiolule 0.4–0.7 cm), blade oblong to elliptic or ovate, (0.4–)0.7–1.7(–2) cm, base cuneate or obtuse, margins entire or obscurely 3-lobed.

2–6, 5–11-foliolate, petiolate, leaflets petiolulate or sessile;

petiole 3–10 cm, base not auriculate;

lateral leaflets sessile, blade similar to terminal, smaller;

terminal leaflet (petiolule 0.5–1.5 cm), blade narrowly ovate or oblong to oblanceolate, 1.5–3.5 cm × 2–15 mm, margins entire or toothed to 3-lobed.

3 or 4, 3- or 5-foliolate, petiolate, leaflets petiolulate;

petiole 0.5–1.7 cm, base not auriculate;

lateral leaflet blade linear to linear-lanceolate, 0.9–1.5 cm × 1–3 mm, margins entire;

terminal leaflet (petiolule 0.3–0.5 cm), blade obovate to lanceolate (linear distally), 1.3–2.3 cm × 2–8 mm, base cuneate, margins entire or subapically 1- or 2-toothed.

ebracteate.

ebracteate.

sepals oblong to ovate, 3.5–5 × 1.8–2.5 mm, lateral pair saccate basally;

petals white, obovate, 12–16 × 6–8 mm, (not clawed, apex rounded or subemarginate);

filaments: median pairs 6–7 mm, lateral pair 4–5 mm;

anthers oblong, 1.5–1.8 mm.

sepals oblong, 1.2–1.5 × 0.6–0.8 mm, lateral pair not saccate basally;

petals white, oblanceolate, 2–2.5 × 0.8–1 mm, (not clawed, apex rounded);

filaments: median pairs 1.5–1.8 mm, lateral pair 1–1.2 mm;

anthers ovate, 0.2–0.3 mm.

ascending to divaricate, (10–)20–40(–60) mm.

ascending to suberect, 5–14 mm.

linear, 2.5–4.5 cm × 1.4–2 mm;

ovules 12–24 per ovary;

style 4–6 mm.

linear, 1–2 cm × ca. 1 mm;

ovules 16–24 per ovary;

style 0.5–0.7 mm.

brown, oblong, 1.8–2 × 1–1.5 mm.

brown, oblong, 1.2–1.5 × 0.8–1 mm.

and basal leaves absent.