Flora of North America species comparison

absent.

cylindrical, slender, 0.8–1.5 mm diam.

(simple or several from base), erect or decumbent, (flexuous or straight, narrowly winged-angled), unbranched or branched distally, (1.4–)2–4.5(–5.3) dm.

prostrate to decumbent or erect, unbranched or branched, 0.5–4(–6) dm.

(soon withered), not rosulate.

absent.

3–9, middle ones 5–9-foliolate, petiolate, leaflets petiolulate or subsessile;

petiole 1–3 cm, base not auriculate;

lateral leaflets similar to terminal, blade often smaller, with oblique base, distal leaflets subsessile, blade smaller and narrower distally;

terminal leaflet (petiolule 0.2–0.8 cm), blade usually broadly ovate to narrowly lanceolate, rarely oblong, 0.7–2 cm × 2–10 mm, base cuneate to rounded, margins repand, crenate, or 3-lobed.

3–10, usually simple, rarely 3 or 5-foliolate, petiolate;

petiolulate or sessile;

petiole 0.4–2.5 cm, base not auriculate;

lateral leaflets (when present) sessile or petiolulate (to 0.2 cm), blade similar to terminal, considerably smaller;

terminal leaflet blade orbicular to reniform or ovate to oblong, 0.4–3 cm × 3–20 mm, (somewhat fleshy), base subcordate to rounded or subtruncate, margins entire or repand, rarely undulate, (apex rounded).

ebracteate, (rachis slightly to strongly flexuous or geniculate).

ebracteate.

sepals oblong, 2–3.5 × 0.7–1.2 mm, lateral pair not saccate basally;

petals white, linear, 6–8 × 0.7–1 mm;

filaments: median pairs 4–5 mm, lateral pair 3.5–4 mm;

anthers oblong, 0.7–1 mm.

sepals ovate, 0.7–1.2 × 0.5–0.7 mm, lateral pair not saccate basally;

petals absent or rudimentary, to 0.7 mm;

filaments 0.5–0.8 mm;

anthers ovate, 0.1–0.2 mm.

horizontal to divaricate or ascending, (3–)4–9(–12) mm.

divaricate-ascending to spreading, 0.5–2(–4) mm.

linear, (2.5–)3–4.6 cm × 1.7–2.1 mm;

ovules 14–22 per ovary;

style 1–3 mm.

narrowly oblong to linear, (3–)5–10(–15) × 0.8–1.2 mm;

ovules 6–22 per ovary;

style 0.2–0.5(–1) mm.

dark brown, oblong, 2–2.5 × 0.9–1.2 mm.

light or yellowish brown, oblong or ovoid, 1–1.4 × 0.7–1 mm.