Flora of North America species comparison

not sheathed with marcescent whole leaves.

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

ascending to nearly erect, 1.5–4 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.

often both ternate and palmate on same plant, rarely subpalmate, 4–10 cm;

petiole 2.5–7 cm, long hairs sparse to common, loosely appressed to ascending-spreading, 1–2 mm, ± weak to stiff, verrucose, short and/or ± crisped hairs common to abundant, cottony hairs absent, glands usually sparse;

leaflets 3–5, proximalmost separated by 0(–1) mm, central oblong to obovate, 1.5–4 × 1–2.5 cm, petiolules 0–5 mm, distal 2/3–3/4 of margin incised 1/2–3/4, rarely +, to midvein, teeth (4–)5–8 per side, 4–5 mm, apical tufts 1 mm, abaxial surfaces gray to grayish white, long hairs abundant, cottony-crisped hairs usually dense, short hairs and glands absent or obscured, adaxial green to grayish green, long hairs sparse to common, 0.5–1.5 mm, stiff, short hairs absent or sparse, rarely common, crisped and cottony hairs absent, glands absent or sparse, rarely common.

1–2.

2–3.

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

4–20-flowered, open, branch angle (10–)20–45°.

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

0.5–3 cm, proximal to 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 linear to narrowly lanceolate, 3–4 × 0.8–1.2 mm;

hypanthium 4–6 mm diam.;

sepals 4–5 mm, apex subacute to acute, glands usually ± sparse, not obscured;

petals pale yellow, not overlapping, 5–7 × (4–)5–6.5 mm, distinctly longer than sepals;

filaments 0.5–1.5 mm, anthers 0.4 mm;

carpels 30–60, styles 0.9–1.1 mm.

1.5–2 mm, smooth, not carunculate.

1.2 mm.

= 56.