Flora of North America species comparison

cylindrical, slender, 0.8–1.5 mm diam.

swollen, compact at stem base, (fleshy, stolons many, slender, ca. 1 mm diam., pubescent or glabrous).

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

erect, usually unbranched, rarely branched distally, 1–2.5 dm, sparsely to densely hirsute or pilose proximally, sparsely so or glabrous distally.

absent.

usually simple, rarely 3-foliolate, (3–)6–16 cm, leaflets petiolulate or subsessile;

petiole (1.5–)4–13 cm;

lateral leaflets subsessile or petiolulate (to 0.5 cm), blade similar to terminal, much smaller;

terminal leaflet (petiolule 0.5–2 cm), blade orbicular to reniform or broadly ovate, (1–)1.5–4.5 cm, base cordate, margins repand to coarsely crenate, (apiculate at vein endings, surfaces sparsely pubescent or glabrous).

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).

2–5, 3 or 5-foliolate, petiolate, leaflets petiolulate or subsessile;

petiole 0.8–5 cm, base not auriculate;

lateral leaflets sessile or petiolulate (to 0.5 cm), blade similar to terminal, smaller;

terminal leaflet petiolulate (0.5–1.5 cm), blade broadly ovate to suborbicular, 1.5–4(–5) cm × 12–35 mm, margins repand to coarsely crenate or slightly lobed, (apiculate at vein endings, margins glabrous).

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 (ascending) oblong, 3–3.5 × 1–1.5 mm, lateral pair not saccate basally;

petals white, oblanceolate, 5–6.5(–8) × 1.5–2.5 mm, (not clawed, apex obtuse to subemarginate);

filaments: median pairs 3.5–5 mm, lateral pair 2.5–3 mm;

anthers oblong, 1.2–1.6 mm.

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

ascending to divaricate-ascending, 7–20 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, 1.5–2.5 cm × 1–1.2 mm;

ovules 10–14 per ovary;

style 1.2–2.5 mm.

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

brown, oblong, 1.2–1.7 × 0.8–1.1 mm.