Flora of North America species comparison

ascending to erect, 0.8–2(–2.5) dm.

decumbent to erect, 0.3–2.5 dm.

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.

± cylindric to weakly planar;

stipules entire;

leaflets 4–14 per side, overlapping at least distally, divided 1/2–3/4+ to midrib into 3–8 lobes not restricted to apex.

2–3.

± congested, flowers arranged in dense corymbiform clusters.

2–8(–10) mm.

remaining straight, 2–8(–12) 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.

epicalyx bractlets linear to lanceolate, 0.3–0.5(–0.8) mm wide, entire;

hypanthium interior sparsely pilose to densely villous;

sepals acute;

petals white, sometimes pink-tinged, narrowly oblanceolate to narrowly elliptic or oblong, apex usually acute to rounded to truncate, sometimes slightly mucronate or emarginate;

filaments white to pinkish, glabrous or sparsely pilose adaxially, anthers longer than wide;

carpels 5–18(–20).

dark brown, 2 mm.

1.5–2.5 mm, smooth.