Flora of North America species comparison

elongate.

elongate.

openly tufted to loosely spaced, 1.5–4.5 dm;

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

openly tufted to loosely spaced, (0.3–)0.6–4 dm;

base 1–3 mm diam., ± densely 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.

glabrate or sparsely to ± densely hairy;

basal (2–)3–16 cm, leaflet pairs (2–)3–4(–5);

terminal leaflet broadly obovate-cuneate to flabellate, 0.2–3(–4) × 0.5–3 cm, teeth single or double, 2–15 per side, apex usually rounded to truncate, sometimes obtuse;

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

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

2–40-flowered, not or ± leafy, open, 1/6–3/4(–4/5) of stem, ± wide, branch angles (10–)20–40(–50)°.

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

3–20 (proximal to 40) mm, not or sparsely to moderately short-hairy, predominantly 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 widely;

epicalyx bractlets linear to elliptic, 2–6 × 1–2 mm;

sepals spreading, 4–7(–9) mm, apex acute to obtuse, apiculate;

petals overlapping or not, spreading, cream-white to pale yellow (red-tinged in var. crumiana), narrowly to broadly obovate, 4–12 × 3–11 mm, longer than sepals;

filaments 1–4 mm, anthers 0.7–1.2 mm;

styles thickened, 1–1.5 mm.

light brown, 1 mm.

light brown, 1 mm.