Flora of North America species comparison

ascending to erect, 0.8–2(–2.5) dm.

erect, 2–6(–8) dm, hairs spreading.

3–8 × 0.7–1.5 cm;

leaflets (5 or)6–12 per side, overlapping at least distally, cuneate to flabellate, 4–9(–10) mm, divided 1/2+ to midrib into 3–6 oblanceolate to obovate lobes (often medially notched more than 3/4 to midrib as well), silky villous.

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.

2–3.

4–7.

open, flowers arranged individually.

2–8(–10) mm.

4–20(–30) mm.

(2–)4–15(–20), 10 mm diam.;

epicalyx bractlets linear, 2.5–4.5 × 0.2–0.5 mm, 2/3 to nearly equal to length of sepals;

hypanthium 1–2.5 × (2–)3–4(–5) mm, ± 1/2 as deep as wide, interior densely villous;

sepals spreading, narrowly lanceolate, 3.5–6 mm, silky hairs silky, 1–1.5 mm;

petals often pink-tinged, linear to narrowly oblanceolate, 2.5–5 × 1 mm, apex ± acute to narrowly rounded, sometimes slightly mucronate;

filaments pinkish, 2 × 0.5–0.7 mm, glabrous or sparsely pilose adaxially, anthers 0.5–0.7 mm;

carpels 8–17;

styles (1.5–)2–3 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.

dark brown, 2 mm.

brown, 1.3–1.5 mm, smooth.