Flora of North America species comparison

cylindrical, slender, 0.5–1.5 mm diam.

absent.

(simple from base), erect, (not flexuous), unbranched or branched basally, 0.6–3 dm.

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

rosulate or not, 3 or 5-foliolate, 1–6 cm, leaflets petiolulate;

petiole 0.4–2.5 cm;

lateral leaflets similar to terminal, considerably smaller;

terminal leaflet (petiolule 0.1–0.4 cm), blade obovate to orbicular or subcordate, 0.3–1.5(–2.0) cm × 2.5–16(–18) mm, base obtuse to rounded or cordate, margins entire or dentate to slightly sinuately lobed.

(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.

2–4, 3 or 5-foliolate, blade similar to basal, gradually reduced in size as bract, distalmost ones subtending pedicels of flowers (usually simple);

leaflet blade or bract linear to linear-oblanceolate, 0.2–0.8 cm.

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.

bracteate throughout.

ebracteate.

sepals oblong, (2–)3 × 0.7(–1) mm, lateral pair not saccate basally;

petals purple or pink, obovate, 6–9 × 3–4 mm, (not clawed);

filaments: median pairs 3–3.5 mm, lateral pair 2–2.5 mm;

anthers oblong, 0.7–1 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.

divaricate-ascending, (10–)15–30(–45) mm.

divaricate or ascending, 4–10 mm.

linear, (torulose), 2–3 cm × 1–1.5 mm;

ovules 14–20 per ovary;

style 2–4 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, 1.7–2.2 × 1–1.5 mm, (winged distally).

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

= 16.