Flora of North America species comparison

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

ascending to erect, 1.5–3.5 dm, hairs 2–3 mm proximally, glands sparse to dense distally.

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.

weakly planar to loosely cylindric, (4–)5–12(–17) × 0.8–3(–4) cm, usually sericeous to villous, sometimes glabrate;

stipules pinnately divided into 3–7 linear to filiform lobes;

leaflets 5–10 per side, ± overlapping, obovate to broadly obcordate, 5–15(–25) × 5–20 mm, ± as wide as long, divided 3/4+ to midrib into (0–)2–15 linear to oblanceolate lobes 0.4–2(–3) mm wide, these not restricted to apex.

2–5.

3–6;

stipules 8–15 mm, deeply 3–7-lobed proximally, 1–3-lobed distally.

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

open to ± congested, flowers arranged individually or in ± corymbiform clusters.

1–6 mm.

2–10(–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.

10–15 mm diam.;

epicalyx bractlets linear to linear-lanceolate, 2.5–3.5 × 0.5 mm, 2/3 to ± equal to length of sepals;

hypanthium 1–1.5 × 3.5–5 mm, less than 1/2 as deep as wide, interior glabrous;

sepals ± spreading, abaxially green, 3.5–7.5 mm;

petals white to cream, often drying yellowish, cuneate to obcordate, (3.5–)4–8 × 2–8 mm, apex ± emarginate, sometimes rounded;

filaments 1–3 × 0.5–1.5 mm, anthers 0.5–0.8 mm;

carpels 5–15, styles 2–4 mm.

light brown, 1.5 mm, smooth or slightly rugose.

dark brown, 2.4–3 mm, smooth to ± roughened.

= 28.