Flora of North America species comparison

usually ± erect, sometimes nearly prostrate, 0.5–1.5(–2) dm.

decumbent to erect, 0.3–1(–1.5) dm.

very tightly cylindric (mousetail-like, with individual leaflets scarcely distinguishable), 2–5(–10) cm; sheathing base densely strigose abaxially;

petiole 0.2–0.8(–1) cm, hairs 0.5–1.5 mm;

leaflets 25–40 per side, 0.4–1 mm, densely sericeous, glands obscured, lobes 2–5, obovate or oval to orbiculate, apex not setose.

tightly cylindric, (0.5–)1–8(–12) cm; sheathing base usually ± strigose abaxially;

petiole 0.5–4 cm, hairs 0.2–1 mm;

leaflets 10–15(–20) per side, 0.5–4(–5) mm, sparsely to moderately short-villous, densely glandular, lobes 3–6(–8), oblanceolate to narrowly oblong or oval, apex setose.

(0–)1–2, paired if 2.

(0–)1, not paired.

10–30-flowered, 1–2(–3.5) cm diam.;

glomerules usually 1.

(1–)5–10-flowered, 0.8–3 cm diam.;

glomerules usually 1.

0.3–2(–3.5) mm.

1.5–8(–10) mm.

5–6 mm diam.;

epicalyx bractlets oblong to obovate, 0.5–1 mm;

hypanthium shallowly cupulate, 0.5–1(–1.5) × 1.5–2.5 mm;

sepals (1–)1.5–2.5 mm, acute;

petals yellow, linear to oblanceolate or narrowly oblong, 1–2 mm;

stamens 5, filaments 0.3–0.6 mm, anthers yellow, 0.4–0.6 mm;

carpels 1–4, styles 0.7–1.2 mm.

9–11 mm diam.;

epicalyx bractlets elliptic to oblong, 1.2–2 mm;

hypanthium shallowly cupulate, 1–2 × 2.5–5(–7) mm;

sepals 2–3.5 mm, bluntly acute;

petals golden yellow, broadly oblanceolate to spatulate or broadly obovate, (2–)2.5–3.5(–4) mm;

stamens 10, filaments 0.6–1.8 mm, anthers yellow, 0.6–0.8 mm;

carpels 10–30, styles 0.9–1.3 mm.

grayish brown, mottled with red, 1.6–2 mm.

greenish tan to light brown, 1.2–1.5 mm.