Flora of North America species comparison

cylindrical, slender, 1–3 mm diam.

cylindrical, slender, 0.7–1.5 mm diam.

erect, unbranched or rarely branched distally, (0.8–)1–2.5(–3.5) dm.

erect or ascending, unbranched, 0.3–1.5(–2) dm.

simple or 3-foliolate, (1.5–)3–8 cm, leaflets petiolulate or subsessile;

petiole (1–)2–6 cm;

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

terminal leaflet petiolulate (to 1 cm), blade reniform to cordate, (0.5–)1–2 cm, base cordate, margins entire or 3-lobed.

pinnately 5 or 7-foliolate, (1.3–)2.5–6.5 cm, (not fleshy), leaflets petiolulate;

petiole (0.5–)1.5–5.5 cm;

lateral leaflets similar to terminal, blade sometimes smaller;

terminal leaflet (petiolule 0.15–0.7 cm), blade ovate to elliptic, (0.2–)0.4–1.2(–1.5) cm × (1–)2.5–6 mm, base cuneate to obtuse, margins entire, (apiculate).

3–7, 3-foliolate (or distalmost simple), petiolate, leaflets petiolulate or sessile;

petiole 0.7–3.5 cm, base auriculate (auricle 0.7–5 mm);

lateral leaflets sessile or petiolulate (to 0.5 cm), blade oblong to ovate or oblong;

terminal leaflet (petiolule 0.5–1 cm), blade broadly ovate to suborbicular or reniform, 1.5–4 cm × 15–35 mm, margins often 3 or 5-lobed (lobe apex minutely apiculate, glabrous on margin).

1–3, 5 or 7-foliolate, petiolate, leaflets petiolulate or subsessile;

petiole 0.2–1.5 cm, base not auriculate;

lateral leaflets similar to terminal;

terminal leaflet (subsessile or petiolule to 0.2 cm), blade ovate to elliptic, 0.6–1.3 × 0.1–0.7 cm, base cuneate, margins entire.

ebracteate.

ebracteate.

sepals oblong, 2.5–3 × 1–1.5 mm, lateral pair not saccate basally;

petals white, oblanceolate, 6–8 × 2–3 mm (not clawed, apex obtuse to subemarginate);

filaments: median pairs 3.5–4 mm, lateral pair 2–2.5 mm;

anthers ovate, ca. 0.7 mm.

sepals ovate to oblong, 3–4 × 1.8–2.5 mm, lateral pair slightly saccate basally;

petals usually white, rarely lavender, broadly obovate, 7–10 × 3–6 mm, (clawed, apex rounded);

filaments: median pairs 3–4.5 mm, lateral pair 2–3 mm;

anthers oblong, 1–1.5 mm.

divaricate-ascending, (7–)10–17 mm.

erect to ascending, 7–15(–25) mm.

linear, (1.5–)2–3.5(–4) cm × 1.3–1.7 mm;

ovules 10–16 per ovary;

style 2–4 mm.

linear, 2–3 cm × 1.2–1.7 mm;

ovules 12–16 per ovary;

style 1–2 mm.

brown, oblong, 1.7–2 × 1–1.2 mm.

brown, oblong, ca. 1.5 × 1 mm.

= 28, 42, 64.