Flora of North America species comparison

ascending to erect, 1–4 dm, hairs ± spreading.

ascending to erect, (1–)5–10(–12) dm, hairs ± spreading.

weakly planar to ± cylindric, 5–15(–20) × 0.5–1.5 cm;

stipules entire;

leaflets 8–16(–20) per side, ± overlapping especially distally, cuneate to flabellate, 3–10 × 2–10 mm, 1/2 to nearly as wide as long, divided 1/2–3/4+ to midrib into 3–8 linear to narrowly oblanceolate or narrowly elliptic lobes, sparsely villous at least marginally, often with a tuft of hairs apically.

planar, (5–)8–40(–50) × 1.5–11 cm;

stipules entire;

leaflets 3–9 per side, separate to slightly overlapping, ovate to round or broadly elliptic, 5–60 × (7–)10–30(–40) mm, 1/2 to as wide as long, unlobed or irregularly cleft 1/6–3/4+ to midrib into 5–15 linear or oblanceolate to obovate coarsely toothed lobes, collectively 10–60-toothed, pilose to villous.

2–5.

4–10.

open to congested, flowers arranged individually and in glomerules, these sometimes subcapitate.

± open, flowers arranged individually and in glomerules.

1–6 mm.

1–20 mm.

10 mm diam.;

epicalyx bractlets narrowly to broadly lanceolate, 1–3 × 0.5–1 mm, slightly shorter than sepals, entire;

hypanthium 1–1.2 × 2.5–4.5 mm, less than 1/2 as deep as wide, interior pilose;

sepals spreading to reflexed, lanceolate, 3–5 mm;

petals oblanceolate, 2.5–4.5 × 1.5 mm, apex emarginate;

filaments (1–)1.5–2 × 0.5 mm, anthers 0.4–0.6 mm;

carpels 10–25;

styles 1.8–2.2 mm.

8–15 mm diam.;

epicalyx bractlets narrowly oblong to ovate, 4–6(–8) × 1–2.5 mm, ± equal to sepals, entire or toothed;

hypanthium 3–5.5 × 4–10 mm, 1/2 to nearly as deep as wide, interior glabrous or pilose;

sepals spreading, lanceolate, 4–6.5(–8) mm;

petals oblanceolate to elliptic or oblong, 3–8 × 1–4 mm, apex obtuse to rounded;

filaments 0.5–3 × 0.2–1.5 mm, anthers (0.8–)1.3–1.8 mm;

carpels (50–)80–200(–220);

styles 2–4 mm.

light brown, 1.5 mm, smooth or slightly rugose.

brown, 0.8–1 mm, smooth or slightly rugose.

= 28.