Flora of North America species comparison

prostrate to ascending, (0.3–)0.8–2(–3.5) dm, lengths (1–)1.5–3 times basal leaves.

ascending to erect, 2–5 dm.

pinnate with distal leaflets ± distinct, (1.5–)2–10(–13) × 0.7–3.5(–5) cm;

petiole 0.5–3.5(–5) cm, straight hairs sparse to abundant, sometimes absent (var. decurrens), ± appressed to ascending, 1 mm, ± stiff, cottony hairs absent, glands sparse, often obscured;

primary lateral leaflets 3–6 per side (often with additional interspersed leaflets), on distal 1/2–2/3(–3/4) of leaf axis, ± separate to ± overlapping, largest ones narrowly cuneate-oblanceolate to ± obovate, (0.3–)0.5–2(–3.5) × (0.2–)0.3–0.8(–1) cm, distal 1/4 to whole margin unevenly to pinnately (at least distal leaflets of var. ovina) incised 1/2–3/4+ to midvein, ultimate teeth 2–9(–11), linear or oblong to ovate, 1–7(–9) × 1–2 mm, apical tufts 0.5–2 mm, surfaces green to grayish, not glaucous, straight hairs sparse to abundant (sparser adaxially), sometimes absent (except on margins), loosely appressed, 0.5–2 mm, ± stiff, cottony hairs absent, crisped hairs sometimes sparse to common, glands absent or inconspicuous.

palmate or ternate.

1–2.

3–8, proximal ones (3–)5–14 cm;

proximal petioles (1–)2–10 cm, long hairs sparse to common, spreading to loosely appressed, 1–2 mm, weak, short or crisped hairs sparse to common, cottony hairs absent, glands absent or sparse;

leaflets usually 5, central one oblanceolate to obovate, 2–4.5 × 1–2.5 cm, margins ± flat, distal 3/4+ usually unevenly, sometimes evenly, incised 1/3–2/3 to midvein (often with 1–2 incisions nearly to midvein), teeth 5–10 per side, surfaces similar or ± dissimilar, abaxial green to grayish green, long hairs sparse to common (especially on veins), 0.5–1.5 mm, soft to weak, short or crisped hairs ± sparse, cottony hairs absent, glands absent or sparse, adaxial long hairs absent or sparse, 1 mm, short hairs absent or sparse, crisped and cottony hairs absent, glands absent or sparse.

(1–)2–11(–20)-flowered, usually openly cymose.

20–100+-flowered.

(0.8–)1–2(–4) cm, straight to ± recurved in fruit.

0.5–1.5(–2.5) cm.

epicalyx bractlets linear-lanceolate to narrowly elliptic, sometimes doubled, 2–3.5(–5) × 1 mm;

hypanthium 3–5 mm diam.;

sepals 3.5–5.5(–7) mm, apex acute to obtuse;

petals 4–7(–8) × 3.5–8 mm;

filaments 1–2.5 mm, anthers 0.4–1 mm usually ± 1/2 as long as filaments;

carpels 10–20, styles 2–3 mm.

epicalyx bractlets lanceolate to ovate or elliptic, 2–5 × 0.8–1.5 mm, lengths usually 2/3, sometimes 1, times sepals;

sepals 3.5–6.5 mm, apex ± acute;

petals 3–5 × 2–3 mm;

filaments 0.8–2 mm, anthers 0.3–0.5 mm;

carpels 40–70, styles 1–1.2 mm, scarcely papillate-swollen proximally.

1.5–2 mm, smooth, not carunculate.

1 mm, rugose.

= 28, 56 (Eurasia).