Flora of North America species comparison

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

cylindrical, slender or stout, 1.5–3 mm diam., (not fleshy).

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

erect, unbranched or branched distally, 2–7(–10.2) dm, glabrous or sparsely to densely puberulent basally or throughout.

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.

usually absent, rarely present, simple, 5–15 cm;

petiole 2.5–12 cm;

blade reniform to cordate, 1.5–4.5(–6) cm.

(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).

(3–)5–17(–23), simple or, rarely, proximalmost 3-foliolate, petiolate;

petiole 1–6.5(–8.5) cm, base not auriculate;

blade reniform, deltate-cordate, or ovate-cordate, (1–)2–7.2(–9.7) cm × 10–55(–85) mm, (somewhat fleshy), base cordate or truncate, margins crenate to slightly sinuate, (veins ending in apiculae, surfaces glabrous or sparsely to densely pubescent).

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, 2.5–4.5 × 1.5–2 mm, lateral pair slightly saccate basally;

petals white, broadly obovate, 7–12 × 4–6 mm (claw to 6 mm, apex rounded to subtruncate or emarginate);

filaments: median pairs 3.5–5 mm, lateral pair 2–3.5 mm;

anthers oblong, 1–1.5 mm.

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

divaricate to ascending, (7–)10–20 mm.

linear, 2–3.5(–4) cm × 1.4–1.7 mm;

ovules 14–24 per ovary;

style 2–4(–5) mm.

linear, (2–)2.5–3.7(–4) cm × 1.2–2 mm; (valves glabrous or sparsely puberulent);

ovules 14–24 per ovary;

style 0.5–3(–6) mm.

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

brown, oblong, 1.6–2 × 1–1.3 mm.

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

= 24.