Flora of North America species comparison

absent.

slender, 0.5–1 mm diam.

erect, unbranched or, rarely, branched, 0.5–1.6(–3.5) dm.

erect to ascending, branched, 1.5–2 dm.

(7 or) 9–21-foliolate, (thick, veins impressed);

leaflets petiolulate or sessile;

lateral lobes or leaflets similar to terminal;

terminal lobe or leaflet blade orbicular, broadly ovate to lanceolate, base rounded to cuneate, margins usually entire.

2–4(–7), pinnatisect or pinnately compound, (7 or) 9–21-foliolate, (thick, veins impressed), petiolate, leaflets petiolulate or sessile;

petiole base not auriculate;

lobes or leaflets (of proximal leaves) (4–)7–10 each side of rachis, fewer distally, distal leaves with 4 or 5 lobes or leaflets each side of rachis;

terminal leaflet petiolulate or sessile, blade (or lobe) narrowly lanceolate to lanceolate, base cuneate, margins entire.

3 or 4, 3- or 5-foliolate, petiolate, leaflets petiolulate;

petiole 0.5–1.7 cm, base not auriculate;

lateral leaflet blade linear to linear-lanceolate, 0.9–1.5 cm × 1–3 mm, margins entire;

terminal leaflet (petiolule 0.3–0.5 cm), blade obovate to lanceolate (linear distally), 1.3–2.3 cm × 2–8 mm, base cuneate, margins entire or subapically 1- or 2-toothed.

ebracteate.

ebracteate.

sepals oblong or ovate, 3.6–4.4 mm, lateral pair saccate basally, (green with hyaline margins);

petals white-lilac, 9–12.3 × 4.8–6.8 mm, (clawed, apex rounded or emarginate);

filaments: median pairs 3.5–4.5 mm, lateral pair 2–3 mm;

anthers narrowly oblong, 0.9–1.4 mm.

sepals oblong, 1.2–1.5 × 0.6–0.8 mm, lateral pair not saccate basally;

petals white, oblanceolate, 2–2.5 × 0.8–1 mm, (not clawed, apex rounded);

filaments: median pairs 1.5–1.8 mm, lateral pair 1–1.2 mm;

anthers ovate, 0.2–0.3 mm.

erect-ascending, 5–15 mm.

ascending to suberect, 5–14 mm.

linear, 1–1.8 cm × ca. 1.5 mm;

ovules ca. 16 per ovary;

style ca. 1 mm, (stout).

linear, 1–2 cm × ca. 1 mm;

ovules 16–24 per ovary;

style 0.5–0.7 mm.

brown, oblong, ca. 1.5 mm.

brown, oblong, 1.2–1.5 × 0.8–1 mm.

and basal leaves absent.

= 56, 60, 64, 80–100.