Flora of North America species comparison

ascending to erect, 1–2.5 dm.

erect, 2–6(–8) dm, hairs spreading.

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, 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.

3–7.

4–7.

open, flowers arranged individually.

2–8(–12) mm.

4–20(–30) 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.

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.

brown to dark brown, 1.5–2 mm.

brown, 1.3–1.5 mm, smooth.