Flora of North America species comparison

ascending to erect, 0.3–1.2 dm.

ascending to erect, (1.8–)2–6(–6.5) dm.

weakly planar to loosely ± cylindric, (0.5–)2–4(–6) cm; sheathing base glandular abaxially, otherwise glabrous;

petiole 0.5–2 cm, hairs 0.2–1 mm;

leaflets 5–6 per side, 2–6 mm, ± short-hirsute, glandular-puberulent, lobes 2–7, oblanceolate to spatulate or obovate, apex not setose.

7–25(–30) cm; sheathing base usually sparsely strigose abaxially;

petiole 1–4(–5) cm;

leaflets 15–40 per side, ± flabellate, 3–14 mm, usually incised to base into 2–3 oblanceolate lobes, ± densely short-hirsute to -villous.

1–3, not paired.

3–14-flowered, 1–2.5 cm diam.;

glomerules 1.

10–60-flowered, 4–15 cm diam.

1.5–6 mm.

(1–)5–20 mm.

8–10 mm diam.;

epicalyx bractlets linear to narrowly lanceolate or elliptic, 2.5–5 mm, longer than sepals;

hypanthium shallowly cupulate, 0.5–1 × 2–3 mm;

sepals 1.5–2.5 mm, ± acute;

petals pale yellow, linear to narrowly oblanceolate, 1.5–2.5 mm;

stamens 5, filaments 0.7–1.3 mm, anthers yellow, 0.5–0.8 mm;

carpels 6–11, styles 1–1.5 mm.

9–14 mm diam.;

epicalyx bractlets lanceolate, 1–3(–3.3) mm;

hypanthium interior golden, 1–2 × 3–5 mm;

sepals (2.5–)3.5–6 mm, base golden adaxially, apex acute to acuminate;

petals yellow, linear to narrowly oblanceolate, 2–4 mm;

stamens 5, filaments 2–4 mm, anthers yellow, sometimes red-rimmed, oblong, 0.6–1.2 mm;

carpels 1–5, styles 2–3 mm.

cream to light tan, 1.2–1.5 mm.

brown, 1.7–2.2 mm.