Flora of North America species comparison

(tuberous at stem base, sometimes also at intervals) subglobose, lobed, 4–15 mm diam. (fleshy).

cylindrical, slender, 1–2 mm diam.

erect, unbranched, (1–)2–6 dm, glabrous or sparsely pubescent on distal 1/2 (trichomes 0.02–0.1 mm).

erect or decumbent at base, unbranched, 0.6–2 dm.

simple, (2–)4–13(–16) cm;

petiole (1.5–)2.5–10(–13) cm;

blade usually reniform to cordate or ovate, rarely oblong, (1–)2–4(–6) cm, base obtuse to cordate, margins usually repand or entire, rarely shallowly dentate.

palmately or subpalmately compound, 3 or 5 (or 7)-foliolate, 5.5–17(–22) cm, (fleshy), petiolate, leaflets petiolulate or subsessile;

petiole 4–14(–17) cm;

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

terminal leaflet (petiolule 0.1–0.5 cm), blade ovate to lanceolate or elliptic-oblong, 1–3 cm × 6–17 mm, base cuneate or obtuse, margins entire, (apiculate).

(2–)4–10(–14), simple, petiolate or sessile; (middle ones) shortly petiolate or (distally) sessile, base not auriculate;

blade ovate to oblong, or oblong-linear to lanceolate, 3–6(–9) cm × 10–30(–45) mm, margins entire, repand, or dentate (margins minutely pubescent).

2 or 3, 3 or 5-foliolate, petiolate, leaflets petiolulate or sessile;

petiole 0.7–4(–8) cm, base not auriculate;

lateral leaflets sessile, blade similar to terminal, smaller;

terminal leaflet petiolulate (0.1–0.5 cm), blade elliptic to oblong, or ovate, 1.2–3.5 cm × 4–25 mm, margins entire.

ebracteate.

ebracteate.

sepals oblong, 2.5–4.5 × 1.5–2 mm, lateral pair not saccate basally, (glabrous);

petals usually white, rarely pale pink, obovate, (6–)7–12(–16) × 3–5 mm, (short-clawed, apex rounded);

filaments: median pairs 4.5–7 mm, lateral pair 2–3.5 mm;

anthers oblong, 1–1.5 mm.

sepals oblong, 3–5 × 1.5–2 mm, lateral pair saccate basally;

petals white, obovate, 8–14 × 4–7 mm, (short-clawed, apex rounded or subemarginate);

filaments: median pairs 4–5 mm, lateral pair 2.5–3.5 mm;

anthers oblong, 1–1.2 mm.

ascending to divaricate, (10–)15–22(–30) mm.

ascending to divaricate, 6–18 mm.

linear, 2–3.5(–4) cm × 1.4–1.7 mm;

ovules 14–24 per ovary;

style 2–4(–5) mm.

linear, 2–4 cm × 1.5–2.2 mm;

ovules 10–14 per ovary;

style 1–5 mm.

dark orange to greenish yellow, oblong or globose, 1.7–2.1 × 1–1.4 mm.

brown, oblong, 1.8–2.2 × 1.2–1.5 mm.

= 16, 56, 64, 80, 96, 112.