Flora of North America species comparison

ascending to erect, 1–2.5 dm.

decumbent to nearly erect, 0.5–4(–7) dm, hairs 1–3 mm proximally, glands absent or sparse distally.

3–10 × 0.4–0.8 cm;

leaflets (6–)10–14 per side, ± overlapping at least distally, cuneate to flabellate, 2.5–4(–6) mm, divided 3/4+ to midrib into 3–6 oblanceolate to obovate lobes, hispid.

planar, 3–12 × 1–3(–4) cm, usually sericeous to villous, sometimes glabrate adaxially;

stipules entire or rarely forked or pectinate;

leaflets 2–5(or 6) per side, separate to slightly overlapping, elliptic to cuneate-oblong, (3–)5–20(–30) × 1.5–7(–10) mm, (1/4–)1/3–1/2 as wide as long, divided 1/10–1/6 or less to midrib into (0–)3(or 4) triangular teeth 1 mm wide, these restricted to apex.

3–7.

1–5;

stipules 3–12 mm, entire or deeply 3–5-lobed, lanceolate to ovate.

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

2–8(–12) mm.

(1–)2–6(–10) mm.

3–15, 10 mm diam.;

epicalyx bractlets linear to lanceolate, 1.5–3 × 0.2–0.5 mm, ± 2/3 length of sepals;

hypanthium 1.8–3 × 3–4 mm, ± 1/2 as deep as wide, interior sparsely pilose;

sepals reflexed, broadly lanceolate, 2.5–4(–5) mm, hairs stiff, 0.5 mm;

petals not pink-tinged, oblanceolate to oblong or narrowly elliptic, 2.5–5 mm, apex rounded to truncate, sometimes slightly emarginate or mucronate;

filaments white, 0.5–2 × 0.4–0.6 mm, glabrous or sparsely pilose adaxially, anthers 0.5–0.9 mm;

carpels (10–)12–18(–20);

styles 1.8–2.2 mm.

4–10 mm diam.;

epicalyx bractlets linear to narrowly elliptic, 0.8–2(–3) × 0.2–0.4 mm, 1/2–2/3 length of sepals;

hypanthium 1–2.5 × 2–5 mm, 1/2 to nearly as deep as wide, interior glabrous or pilose;

sepals moderately reflexed, abaxially green to reddish, 1.5–3 mm;

petals white, sometimes tinged with pink, linear to broadly oblanceolate, (1–)1.5–4(–4.5) × 0.3–1.5 mm, apex acute to rounded or mucronate;

filaments 0.5–2 × 0.1–0.4(–0.8) mm, anthers 0.2–0.5 mm;

carpels 5–15;

styles 1–2.5 mm.

brown to dark brown, 1.5–2 mm.

light brown, 1.5–2.5 mm, rugose.