Flora of North America species comparison

decumbent to erect, (1–)2–6(–7.5) dm, hairs ascending to appressed, sometimes spreading.

ascending to erect, (0.9–)1.5–5 dm, hairs 1 mm proximally, glands absent or sparse distally.

planar, (5–)10–30 × 1.5–4(–5) cm;

stipules entire or basally lobed;

leaflets 5–12 per side, separate to slightly overlapping, ± elliptic to obovate or oblanceolate, 5–25(–30) × 5–15(–25) mm, ± 1/2 to nearly as wide as long, divided less than 1/3 to midrib into (5–)10–15 oblanceolate to obovate teeth, sparsely pilose to glabrate or sericeous.

± cylindric to weakly planar, 5–15 × 0.5–1.8(–2.5) cm, usually villous to pilose at least marginally, often glabrescent;

stipules deeply 2-lobed or pinnately divided into 3–5 linear to filiform lobes that often form a tangled mass;

leaflets 10–15 per side, ± overlapping, elliptic to flabellate, (3–)4–10(–15) × 2–8 mm, 1/2 to as wide as long, divided 1/2–3/4 to midrib into (0–)2–4 elliptic to linear lobes 1–2 mm wide, these not restricted to apex.

1–3(–5).

(2 or)3–5;

stipules 5–12(–15) mm, entire to deeply 2–4-lobed or -toothed (usually on 1 side).

± open to congested, flowers arranged individually and/or in glomerules.

open, flowers arranged individually and/or in non-capitate glomerules.

1–30(–40) mm.

1–6(–12) mm.

12–17 mm diam.;

epicalyx bractlets lanceolate to ovate, 3–5 × 1.5–3 mm, 2/3–3/4 length of sepals, entire;

hypanthium 1.5–2 × 4–7 mm, less than 1/2 as deep as wide, interior glabrous or pilose in a narrow ring;

sepals ± reflexed to spreading, lanceolate, 4–6.5 mm;

petals oblanceolate to narrowly obovate, 4–8 × 1.5–4 mm, apex obtuse to rounded;

filaments 1–3 × 0.5–2 mm, anthers 0.7–1.1 mm;

carpels (30–)40–60(–80);

styles 2–3 mm.

10 mm diam.;

epicalyx bractlets linear-lanceolate, 1–3 × 0.5 mm, ± 2/3 length of sepals;

hypanthium 1.1–1.5 × 2–3 mm, ± 1/2 to as deep as wide, interior glabrous;

sepals spreading to reflexed, abaxially green to reddish or purplish, 2.5–4.5 mm;

petals white to pink or red-veined, narrowly obcordate, 3–5 × 2–3 mm, apex truncate or emarginate;

filaments 0.5–1.7 × 0.2–0.5 mm, anthers 0.4–0.6 mm;

carpels 2–6;

styles 1.5–2 mm.

brown, 1.5–1.8 mm, smooth or minutely rugose.

brown, 2–2.7 mm, smooth.