Flora of North America species comparison

absent.

cylindrical, slender, 0.7–1.5 mm diam.

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

erect or ascending, unbranched, 0.5–2(–2.5) 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.

pinnately 5- or 7-foliolate, 2.5–12 cm (not fleshy), leaflets petiolulate;

petiole 1.5–4(–9) cm;

lateral leaflets similar to terminal, or smaller and margins usually toothed, rarely entire;

terminal leaflet (petiolule 0.15–0.3 cm) blade suborbicular to broadly obovate, 0.4–1.5 cm × 2.5–14 mm, base obtuse to subcordate, margins 3–5-toothed, (apiculate).

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.

1–3, (3–)5-foliolate (alternate), petiolate, leaflets petiolulate or subsessile;

petiole 0.2–2(–6.5) cm, base not auriculate;

lateral leaflets similar to terminal;

terminal leaflet subsessile or petiolulate (to 0.2 cm), blade obovate to oblanceolate, 0.5–1.5 cm × 3–10 mm, base cuneate, margins 3-toothed or entire.

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, 2–3.5 × 2–2.5 mm, lateral pair slightly saccate basally;

petals white, broadly obovate, 7–10 × 3–6 mm (clawed, apex rounded);

filaments: median pairs 3–4 mm, lateral pair 2–3 mm;

anthers oblong, 1–1.5 mm.

erect-ascending, 5–15 mm.

erect to ascending, 0.7–22 mm.

linear, 1–1.8 cm × ca. 1.5 mm;

ovules ca. 16 per ovary;

style ca. 1 mm, (stout).

linear, 1.6–4 cm × 1–1.3 mm;

ovules 14–24 per ovary;

style 0.7–3 mm.

brown, oblong, ca. 1.5 mm.

brown, oblong, ca. 1.5 × 1 mm.

= 56, 60, 64, 80–100.

= 28, 42.