Flora of North America species comparison

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

(tuberiform, fragile), moniliform, segments oblong, 3–5 mm diam., (fleshy).

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

erect, unbranched, 1–3.5 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 compound (biternate), 7–20 cm, leaflets petiolulate;

petiole 4–13 cm;

lateral leaflets similar to terminal, blade sometimes smaller;

terminal leaflet (petiolule 1–3(–4) cm), blade ternately or pinnately lobed, (distal segment) linear, 0.7–3.5 cm × 0.6–3 mm, base attenuate to cuneate, 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, palmately compound (biternate, similar to rhizomal leaves, alternate to subopposite), petiolate, leaflets petiolulate;

petiole (0.5–)1–4(–5.5) cm, base not auriculate;

lateral leaflets similar to terminal;

terminal leaflet (petiolule (0.3–)0.7–1.5(–2.5) cm), blade (ternate, distal segment) linear, (0.4–)1.5–5(–6.5) cm × 0.7–4(–6) mm, base cuneate to attenuate, 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, 4–6 × 1.5–2 mm, lateral pair not saccate basally;

petals white to pale pink, oblanceolate, 9–15 × 2–4 mm, (not clawed, apex rounded);

filaments: median pairs 6–7.5 mm, lateral pair 3–5 mm;

anthers linear, 1.5–2.5 mm.

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

ascending to divaricate, 10–25(–35) mm.

linear, 2–3.5(–4) cm × 1.4–1.7 mm;

ovules 14–24 per ovary;

style 2–4(–5) mm.

linear-lanceolate, 2–3.5 cm × 1.5–2 mm;

ovules 10–14 per ovary;

style 4–7(–10) mm.

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

brown, oblong, 1.5–2.5 × 1–1.5 mm.

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

= 64, 112.