Flora of North America species comparison

absent.

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

erect, (angled, sometimes flexuous), unbranched basally, usually branched distally, (1.2–)2–6.5(–9) dm.

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

(often withered by flowering), rosulate, similar to cauline, with fewer distal leaflets.

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).

9–24, (9–)13–25-foliolate, petiolate, leaflets petiolulate;

petiole 2–6 cm, base auriculate (auricles to 10 × 2.2 mm);

lateral leaflets similar to terminal, blade often smaller;

terminal leaflet (petiolule to 0.5 cm), blade orbicular, obovate, ovate, or lanceolate, 1–4(–5) cm × 5–17 mm, margins entire or 3–5(–9)-toothed or -lobed.

(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, 1.2–2(–2.5) × 0.7–1(–1.2) mm, lateral pair not saccate basally;

petals (rarely absent), white, oblanceolate, 1.5–4(–5) × 0.6–1.2 mm;

filaments 2–3(–4) mm;

anthers ovate, 0.3–0.5 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 or ascending, 3.5–12(–15) mm.

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

linear, (torulose), (1–)1.6–3(–3.5) cm × 0.9–1.5 mm; (valves glabrous or, rarely, pilose);

ovules 10–30 per ovary;

style 0.6–1.6(–2) 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, 1.1–1.5 × 0.8–1 mm, (compressed, sometimes narrowly winged apically).

brown, oblong, 1.6–3 × 1.8–2 mm.

= 16.

= 128–256.