Flora of North America species comparison

absent.

often elongated, usually slender, rarely thickened, 1–2(–5) mm diam., (not fleshy).

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

(simple or few to several from base), erect to ascending, (not flexuous), unbranched basally, sometimes branched distally, (0.3–)0.8–2.5(–3) 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.

(sometimes withered by anthesis), rosulate, pinnately compound, (3 or) 5 or 7 (or 9)-foliolate, 2–5(–9) cm, leaflets petiolulate or subsessile;

lateral leaflets shortly petiolulate or subsessile, blade usually broadly ovate, rarely broadly obovate or orbicular, smaller than terminal, margins usually entire, rarely slightly 3 (or 5)-lobed or crenate;

terminal leaflet subsessile, blade reniform or orbicular, 0.4–0.8(–1.2) cm × 5–9(–16) mm, margins entire or 3 (or 5)-lobed or crenate.

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.

3–5(–7), 3–7 (or 9)-foliolate, petiolate, leaflets subsessile or sessile;

base not auriculate;

lateral leaflets: blade narrowly obovate, oblanceolate to linear, margins similar to terminal;

terminal leaflet blade narrowly obovate, ovate, oblanceolate, lanceolate, oblong, margins usually entire, sometimes 3-lobed or crenate.

ebracteate.

ebracteate, (subumbellate, 2–8(–14)-flowered, rachis usually 3–20 mm).

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 (greenish or purplish), oblong, 1–2 × 0.5–1 mm, lateral pair not saccate basally;

petals white, narrowly obovate, 2.5–5 × 1–3 mm.

erect-ascending, 5–15 mm.

suberect to ascending, 3–8(–10) mm.

linear, 1–1.8 cm × ca. 1.5 mm;

ovules ca. 16 per ovary;

style ca. 1 mm, (stout).

linear, (torulose), (1.3–)1.8–2.5(–3) cm × 0.8–1.5(–2) mm; (valves glabrous or sparsely pubescent);

style 0.5–2 mm.

brown, oblong, ca. 1.5 mm.

brown, oblong, 1–1.5 × 0.8–1 mm.

= 56, 60, 64, 80–100.

= 32, 36, 48.