Flora of North America species comparison

short.

elongate.

± tufted, (1.5–)2.5–6(–6.5) dm;

base 2–3(–4) diam., sparsely to densely septate-glandular.

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

base 1–3 mm diam., ± densely septate-glandular.

sparsely hairy;

basal (5–)7–20 cm, leaflet pairs (2–)3;

terminal leaflet broadly obovate to rhombic, (1.5–)2–4 × (1–)1.5–3 cm, teeth single or double, 5–9 per side, apex acute to obtuse;

cauline 1–2, 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.

3–15(–20)-flowered, leafy, ± compact, (1/6–)1/5–1/3(–1/2) of stem, narrow, branch angles 10–20°.

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

2–15 (proximal to 20) mm, predominantly short-hairy, often velutinous, not or sparsely to moderately septate-glandular.

3–20 (proximal to 40) mm, not or sparsely to moderately short-hairy, predominantly septate-glandular.

opening widely;

epicalyx bractlets linear to lanceolate or narrowly elliptic, (2.5–)3–8 × 0.5–2(–3) mm;

sepals spreading, (5–)6–12(–15) mm, apex usually acute, sometimes obtuse;

petals rarely overlapping, spreading, cream-white to light yellow, narrowly to broadly obovate, (4–)6–10 × (2.5–)3.5–6(–7) mm, usually shorter than sepals;

filaments 1–3 mm, anthers 0.8–1 mm;

styles very thickened, 1 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, 1.2–1.5 mm.

light brown, 1 mm.