Flora of North America species comparison

(1.5–)2–6.5 dm, base 1–4 mm diam.

1.5–7.5 dm, base 1.5–3 mm diam.

basal (3–)6–20 cm, leaflet pairs 2–3(–4), terminal leaflet obovate to rhombic-elliptic, (1–)2–4 × 1–2.5 cm, teeth single or double, 4–9 per side, apex rounded to obtuse;

cauline moderately developed, leaflet pairs 2–3.

basal (3–)6–20(–30) cm, leaflet pairs 3(–4);

terminal leaflet ± broadly obovate, (1–)1.5–5(–7) × 1–3 cm, teeth usually double, rarely single, 6–16 per side, apex rounded to obtuse;

cauline well developed or reduced, leaflet pairs 2–3.

(2–)5–30-flowered, not leafy, narrow, branch angles 15–30(–40)°.

(2–)10–30-flowered, ± leafy or not, usually wide, branch angles (15–)25–55°.

2–10 (proximal to 20) mm.

2–10 (proximal to 20) mm.

epicalyx bractlets lanceolate-elliptic, (1.5–)2–3(–4.5) × 0.7–1.1(–1.5) mm;

sepals reflexed, 4–6(–8) mm, apex obtuse to acute;

petals reflexed, yellow, narrowly obovate-elliptic, 2–4(–5) × 1.5–2.5 mm;

filaments 0.5–1.5(–2) mm.

epicalyx bractlets narrowly elliptic, 1.5–4 × 0.5–1(–1.5) mm;

sepals reflexed, (3–)4–6(–8) mm, apex usually obtuse, sometimes acute;

petals reflexed, yellow, narrowly ovate or obovate, 3–4(–5) × 1.5–3 mm;

filaments 0.5–1.5(–2) mm.

0.9–1 mm.

0.9–1.3 mm.

= 14.