Flora of North America species comparison

ascending to erect, 2–6 dm.

decumbent to erect, 0.3–1(–1.5) dm.

6–25(–30) cm; sheathing base minutely glandular abaxially;

petiole 0.5–8(–10) cm;

leaflets 12–30 per side, obovate to broadly cuneate, 5–12(–15) mm, incised 1/3–1/2 to base into 3–5 oblong to ovate teeth, sometimes entire, sparsely short-strigose to -villous, sometimes glabrate.

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, not paired.

(5–)8–60-flowered, 2–12 cm diam.

(1–)5–10-flowered, 0.8–3 cm diam.;

glomerules usually 1.

5–30(–35) mm.

1.5–8(–10) mm.

9–12 mm diam.;

epicalyx bractlets narrowly lanceolate to lanceolate, 1–2 mm;

hypanthium interior brick- to blood-red or golden, 0.5–1.5 × 3–5 mm;

sepals 3–4.5 mm, base brick- to blood-red adaxially, apex acute to acuminate;

petals brick- to blood-red, linear to oblanceolate or narrowly elliptic, 2–3.5 mm;

stamens 5, filaments 1.3–2 mm, anthers maroon, oblong, 0.6–0.9 mm;

carpels 1–5, styles 2–3 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.

brown, 2–2.5 mm.

greenish tan to light brown, 1.2–1.5 mm.

= 28.