Flora of North America species comparison

cylindrical, slender, 1–3 mm diam.

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

erect, unbranched or rarely branched distally, (0.8–)1–2.5(–3.5) dm.

erect, unbranched, 1–3.5 dm.

simple or 3-foliolate, (1.5–)3–8 cm, leaflets petiolulate or subsessile;

petiole (1–)2–6 cm;

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

terminal leaflet petiolulate (to 1 cm), blade reniform to cordate, (0.5–)1–2 cm, base cordate, margins entire or 3-lobed.

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).

3–7, 3-foliolate (or distalmost simple), petiolate, leaflets petiolulate or sessile;

petiole 0.7–3.5 cm, base auriculate (auricle 0.7–5 mm);

lateral leaflets sessile or petiolulate (to 0.5 cm), blade oblong to ovate or oblong;

terminal leaflet (petiolule 0.5–1 cm), blade broadly ovate to suborbicular or reniform, 1.5–4 cm × 15–35 mm, margins often 3 or 5-lobed (lobe apex minutely apiculate, glabrous on margin).

(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, 2.5–3 × 1–1.5 mm, lateral pair not saccate basally;

petals white, oblanceolate, 6–8 × 2–3 mm (not clawed, apex obtuse to subemarginate);

filaments: median pairs 3.5–4 mm, lateral pair 2–2.5 mm;

anthers ovate, ca. 0.7 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.

divaricate-ascending, (7–)10–17 mm.

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

linear, (1.5–)2–3.5(–4) cm × 1.3–1.7 mm;

ovules 10–16 per ovary;

style 2–4 mm.

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

ovules 10–14 per ovary;

style 4–7(–10) mm.

brown, oblong, 1.7–2 × 1–1.2 mm.

brown, oblong, 1.5–2.5 × 1–1.5 mm.

= 64, 112.