Flora of North America species comparison

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

erect, 2–6(–8) 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, 4–13 × 2–3.5(–4) cm;

stipules entire or basally lobed;

leaflets 1–3 per side, separate, oblong to obovate, 10–30 × 5–12(–15) mm, ± 1/2 as wide as long, divided 1/6–1/4 to midrib into (15–)20–30 acute to obtuse teeth, sparsely short-pilose to glabrate, especially adaxially.

2–5.

4–7.

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

open, flowers arranged individually.

1–6 mm.

4–20(–30) 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.

12–17 mm diam.;

epicalyx bractlets broadly ovate, 3–4.5 × 2–3 mm, ± 2/3 length of sepals, entire;

hypanthium 1.5–2 × 5–8 mm, less than 1/2 as deep as wide, interior glabrous;

sepals ± reflexed, broadly ovate, 3.5–5.5 mm;

petals obovate to round, 5–7 × (3–)4–7 mm, apex ± rounded;

filaments 1–2 × 0.5–2 mm, anthers 0.8–1 mm;

carpels 50–80;

styles 1.5–3 mm.

light brown, 1.5 mm, smooth or slightly rugose.

brown, 1.3–1.5 mm, smooth.

= 28.