Flora of North America species comparison

prostrate to ascending, 0.5–1.5(–2) dm.

ascending to erect, 2–6 dm.

± tightly cylindric, 2–7(–9) cm; sheathing base glabrous abaxially;

petiole 0.5–2 cm, hairs 0.5–1 mm;

leaflets 15–20 per side, 2–4 mm, glabrate or sparsely short-hirsute, sparsely to densely glandular, lobes (2–)3–8, narrowly oblanceolate to obovate, apex not setose.

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.

(0–)1, not paired.

(5–)10–30-flowered, 1–2.5(–5) cm diam.;

glomerules 1–few.

(5–)8–60-flowered, 2–12 cm diam.

1–7 mm.

5–30(–35) mm.

7–9 mm diam.;

epicalyx bractlets narrowly oblong to oval, 0.8–2 mm;

hypanthium shallowly cupulate, (1–)1.5–2 × 2.5–3.5 mm;

sepals (1.8–)2–3 mm, acute;

petals white, sometimes pink-tinged, oblanceolate to spatulate, 1.8–3 mm;

stamens 5, filaments 1.3–1.8 mm, anthers orangish to reddish brown, 0.4–0.6 mm;

carpels (1–)2–4, styles 1.5–2 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.

yellowish green to light tan or gray-brown, 1.7–1.9 mm.

brown, 2–2.5 mm.

= 28.