Flora of North America species comparison

cylindrical, slender, 0.8–1.5 mm diam.

cylindrical, slender, 1–2 mm diam.

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

erect or decumbent at base, unbranched, 0.6–2 dm.

absent.

palmately or subpalmately compound, 3 or 5 (or 7)-foliolate, 5.5–17(–22) cm, (fleshy), petiolate, leaflets petiolulate or subsessile;

petiole 4–14(–17) cm;

lateral leaflets subsessile, blade similar to terminal, sometimes smaller;

terminal leaflet (petiolule 0.1–0.5 cm), blade ovate to lanceolate or elliptic-oblong, 1–3 cm × 6–17 mm, base cuneate or obtuse, margins entire, (apiculate).

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).

2 or 3, 3 or 5-foliolate, petiolate, leaflets petiolulate or sessile;

petiole 0.7–4(–8) cm, base not auriculate;

lateral leaflets sessile, blade similar to terminal, smaller;

terminal leaflet petiolulate (0.1–0.5 cm), blade elliptic to oblong, or ovate, 1.2–3.5 cm × 4–25 mm, margins entire.

ebracteate.

ebracteate.

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.

sepals oblong, 3–5 × 1.5–2 mm, lateral pair saccate basally;

petals white, obovate, 8–14 × 4–7 mm, (short-clawed, apex rounded or subemarginate);

filaments: median pairs 4–5 mm, lateral pair 2.5–3.5 mm;

anthers oblong, 1–1.2 mm.

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

ascending to divaricate, 6–18 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.

linear, 2–4 cm × 1.5–2.2 mm;

ovules 10–14 per ovary;

style 1–5 mm.

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

brown, oblong, 1.8–2.2 × 1.2–1.5 mm.