Flora of North America species comparison

(tuberous at stem base), subglobose, (lobed or not), (3–)4–10 mm diam., (fleshy).

absent.

erect, unbranched, (0.7–)1–2.5(–3) dm, sparsely to densely hirsute, or glabrous basally, (trichomes (0.2–)0.3–0.6(–0.8) mm).

(simple or few to several from base), erect, (somewhat flexuous), often branched distally, (0.5–)1–3(–4) dm.

(often withered by anthesis), usually not rosulate, pinnately (5 or) 7–13(–17)-foliolate, (2–)4–10cm, leaflets sessile or petiolulate;

petiole 0.5–2.5(–4.5) cm;

lateral leaflets similar to terminal, sometimes smaller;

terminal leaflet (sessile or petiolule to 0.5 cm), blade linear to oblong, oblanceolate to obovate, or suborbicular, (0.1–)0.3–1 cm × 1–7 mm, base cuneate, margins entire or 3(–5)-toothed or -lobed.

simple, (3–)5–15(–18) cm;

petiole (2–)4–12(–16) cm;

blade often orbicular to cordate, sometimes reniform or ovate, (1–)2–6 cm × (7–)17–50 mm, base obtuse to cordate, margins repand or entire.

3–6(–8), simple, petiolate or sessile; (middle) shortly petiolate or (distal) sessile, base not auriculate;

blade oblong to ovate or lanceolate, 2–5 cm × 5–25 mm, margins entire, repand, or coarsely dentate.

5–10(–14), (5–)9–15(–17)-foliolate, petiolate, leaflets sessile;

petiole 0.3–1 cm, base not auriculate;

lateral leaflets similar to terminal, sometimes smaller;

terminal leaflet blade filiform, linear, or narrowly oblong, 0.3–1(–1.6) cm × 0.3–3 mm, margins usually entire, rarely 1–3-toothed.

ebracteate.

ebracteate.

sepals oblong, 2.5–4(–6) × 1.5–2.5 mm, lateral pair not saccate basally, (surfaces often hirsute);

petals usually rose-purple to pink, rarely white, obovate, (7–)8–13(–15) × 3–5 mm, (short-clawed, apex rounded);

filaments: median pairs 4–7 mm, lateral pair 2–4 mm;

anthers oblong, 1.3–1.7 mm.

sepals oblong, 1–1.5(–2) × 0.3–0.5 mm, lateral pair not saccate basally, (margins membranous);

petals white, oblanceolate, (1.5–)1.8–2.5(–3) × 0.4–0.8(–1) mm;

filaments 1.4–2.5 mm;

anthers ovate, 0.2–0.4 mm.

ascending to divaricate, (10–)15–35(–50) mm, sparsely pubescent or glabrous.

divaricate or ascending, 4–10 mm.

linear, (1.5–)2–4 cm × 1.5–2 mm;

ovules 10–16 per ovary;

style 2–5 mm.

linear, (torulose), (0.5–)1–2(–2.5) cm × 0.6–0.9 mm;

ovules 20–50 per ovary;

style 0.3–0.7(–1) mm.

brown, oblong to ovoid, 1.7–2.5 × 1–5 mm.

pale brown, oblong-ovoid, 0.6–0.9 × 0.4–0.6 mm, (narrowly margined or not).

= 56, 64, 96, 112, 144.

= 16.