Flora of North America species comparison

(1.5–)2–6.5 dm, base 1–4 mm diam.

(1–)2–7 dm, base 2–5 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 (5–)10–30 cm, leaflet pairs (2–)3–4;

terminal leaflet broadly obovate, (2–)3–7 × 2–5 cm, teeth double, 9–17 per side, apex usually rounded, rarely obtuse;

cauline well developed, leaflet pairs 2–4.

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

(3–)5–30-flowered, ± to very leafy, wide, branch angles (15–)30–55°.

2–10 (proximal to 20) mm.

1–5 (proximal to 30) 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 ± elliptic, (3–)4–7 × 1.5–2.5(–3) mm;

sepals spreading, 5–11 mm, apex round-obtuse, mucronate;

petals spreading, usually cream-white, sometimes pale yellow, broadly ovate or obovate, (4–)4.5–6.5 × 3–5.5 mm;

filaments 1–2 mm.

0.9–1 mm.

1.2–1.5 mm.

= 14.