Flora of North America species comparison

cylindrical, slender, 1–2 mm diam.

(relatively short), 2–3 mm diam., (covered with extensive root system).

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

erect to ascending, unbranched or branched distally, 0.9–4 dm.

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).

usually 3-foliolate, rarely simple, 1–8 cm, leaflets petiolulate or subsessile;

petiole 0.5–5 cm;

lateral leaflets subsessile, often minute;

terminal leaflet (petiolule 0.4–2 cm), blade orbicular to broadly ovate, 0.5–3 cm × 5–25 mm, base rounded, margins entire, repand, or dentate.

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.

5–10, petiolate;

middle leaves often simple, petiole 0.3–1.5 cm, blade rhombic to suborbicular or ovate, 1–3.5 cm × 6–22 mm, base obtuse to cuneate, margins entire, repand, or dentate;

distal ones with shorter petiole, blade smaller.

ebracteate.

ebracteate.

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.

sepals (ascending), oblong, 1.5–2.2 × 0.7–1 mm, lateral pair not saccate basally;

petals (somewhat spreading), white, oblanceolate, 3.5–5 × 1.2–1.8 mm, (not clawed, apex rounded);

filaments: median pairs 2.5–3 mm, lateral pair 2–2.5 mm;

anthers ovate, ca. 0.2 mm.

ascending to divaricate, 6–18 mm.

divaricate, 9–17 mm.

linear, 2–4 cm × 1.5–2.2 mm;

ovules 10–14 per ovary;

style 1–5 mm.

linear, 0.8–1.6 cm × 0.8–1 mm;

ovules 16–22 per ovary;

style 1.2–1.8 mm.

brown, oblong, 1.8–2.2 × 1.2–1.5 mm.

brown, oblong to ovoid, 0.9–1.2 × 0.6–0.8 mm.