Flora of North America species comparison

elongate.

short.

openly tufted to loosely spaced, 1.5–4.5 dm;

base 1.2–3.5 mm diam., ± densely septate-glandular.

± tufted, 1.7–4.7 dm;

base 1–3 mm diam., usually not septate-glandular.

sparsely to ± densely hairy;

basal 6–20 cm, leaflet pairs (2–)3–4(–5);

terminal leaflet broadly obovate to nearly round, 1–4 × 1–3.5 cm, teeth usually ± double, 5–10 per side, apex rounded;

cauline 0–2, well developed, leaflet pairs 2–3.

moderately to densely hairy;

basal 5–12 cm, leaflet pairs 3;

terminal leaflet obovate-elliptic, 1–2.5(–3) × 1–2(–2.5) cm, teeth single or double, 6–10 per side, apex obtuse to rounded;

cauline 0–2, developed or reduced, leaflet pairs 2–3.

5–50-flowered, leafy, open, (1/5–)1/2(–4/5) of stem, wide, branch angles 25–50°.

5–35-flowered, ± leafy, usually ± open, 1/3–2/3 of stem, wide, branch angles 15–60°.

2–5 (proximal to 10) mm, sparsely to moderately short-hairy, predominantly septate-glandular.

1–5 (proximal to 15) mm, predominantly short-hairy, usually not or sparsely, sometimes moderately, septate-glandular.

opening narrowly;

epicalyx bractlets usually lanceolate, sometimes linear, 3–4 × 1–1.5 mm;

sepals ± erect, 5–8 mm, apex acute to obtuse;

petals overlapping, ± erect, light yellow, broadly obovate, 5–11 × (3–)5–8 mm, equal to or exceeding sepals;

filaments 1.5–3 mm, anthers 1 mm;

styles slender, (1–)1.5–2.5 mm.

opening narrowly;

epicalyx bractlets linear-oblanceolate, 2–3.5 × 1 mm;

sepals ± erect, 4–6(–8) mm, apex obtuse;

petals not overlapping, ± erect, cream-white, usually narrowly obovate, sometimes oblanceolate, 3–5 × 2–3 mm, usually ± shorter than sepals;

filaments 1.5–3 mm, anthers 0.6–1 mm;

styles slender, 1.5–2.5 mm.

light brown, 1 mm.

light reddish brown, 1–1.2 mm.

= 14.