Flora of North America species comparison

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

(tuberiform, fragile), moniliform, segments fusiform, 2–10(–20) mm diam. (fleshy).

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

erect, unbranched, (1–)2–4(–5.5) dm, glabrous or pubescent distally.

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

petiole 2.5–12 cm;

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

3-foliolate, (7–)10–20(–30) cm, leaflets sessile;

petiole (4–)7–18(–25) cm;

lateral leaflets similar to terminal, blade sometimes smaller;

terminal leaflet blade oblong, lanceolate, oblanceolate, or linear, 2.5–6 cm, base cuneate, margins coarsely dentate to incised, laciniate, or 3-lobed (lobes usually toothed to incised, rarely entire, surfaces puberulent or not, trichomes 0.2–0.3 mm).

(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).

(2 or) 3, 3-foliolate (usually whorled or opposite, rarely alternate, similar in morphology to rhizomal leaves), petiolate, leaflets petiolulate or subsessile;

petiole (1–)1.5–6(–7.5) cm, base not auriculate;

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

terminal leaflet subsessile or petiolulate (to 3 cm), blade lanceolate, linear, or oblanceolate, (3–)4–10(–12) cm × (3–)5–20(–25) mm, margins usually coarsely dentate to incised, rarely subentire (margins minutely puberulent).

ebracteate.

ebracteate.

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.

sepals oblong, (4–)5–8 × 2–4 mm, lateral pair slightly saccate basally;

petals white to pale pink, oblanceolate, (8–)10–20 × (3–)4–7(–9) mm, (short-clawed, apex rounded);

filaments: median pairs 8–12 mm, lateral pair 6–8 mm;

anthers oblong-linear, 1.5–2.5 mm.

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

ascending to divaricate, (6–)10–27(–33) 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.

linear-lanceolate, (2–)2.5–3.8(–4.8) cm × 1.5–3 mm; (valves glabrous or sparsely pubescent);

ovules 10–14 per ovary;

style (2–)5–9(–12) mm.

brown, oblong, 1.6–2 × 1–1.3 mm.

brown, oblong, 1.6–3 × 1.8–2 mm.

= 24.

= 128–256.