Flora of North America species comparison

cylindrical, slender, 0.8–1.5 mm diam.

cylindrical, slender, 0.7–1.5 mm diam.

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

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

absent.

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).

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).

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 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, 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.

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

erect to ascending, 0.7–22 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, 1.6–4 cm × 1–1.3 mm;

ovules 14–24 per ovary;

style 0.7–3 mm.

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

brown, oblong, ca. 1.5 × 1 mm.

= 28, 42.