Flora of North America species comparison

usually absent or inconspicuous, rarely conspicuous, uncolored.

usually prostrate, sometimes ± decumbent, 0.4–2(–3) dm, lengths 1–2 times basal leaves.

decumbent to nearly erect, 1.5–4.5(–6) dm.

pinnate with distal leaflets ± confluent, 2–15(–20) × 1–3 cm;

petiole 0.5–2(–3) cm, straight hairs sparse to abundant, appressed to spreading, 0.5–1.5 mm, stiff, cottony hairs absent, glands absent or sparse;

primary lateral leaflets (3–)5–13 per side, on distal 2/3–3/4+ of leaf axis, separate to overlapping, largest ones cuneate to flabellate, 0.5–1.5(–2) × 0.5–2 cm, distal 2/3 to whole margin palmately or unevenly, rarely pinnately, incised 2/3 to completely to midvein, ultimate teeth or segments (1–)2–10, linear to broadly oblanceolate, 2–10 × (0.5–)1–2 mm, apical tufts to 1 mm, surfaces green to grayish green, not glaucous, straight hairs sparse to abundant, appressed to spreading, 0.5–1.5(–2) mm, stiff, cottony hairs absent, glands sparse to common.

sometimes 2-ranked, subpinnate to pinnate (proximal leaflets often doubled, distal leaflets confluent and/or decurrent), (4–)10–25 cm;

petiole 1–10(–15) cm, long hairs absent or sparse to abundant, appressed, 1–1.5 mm, usually stiff, short, crisped, and cottony hairs usually absent, glands absent or (regionally) abundant;

leaflets 5–9, on distal 1/10–1/2(–3/4) of leaf axis, separate to ± overlapping, largest ones obovate to cuneate, (1–)2–5 × (0.7–)1–3(–3.5) cm, margins flat, distal 1/2–3/4 unevenly, sometimes evenly, incised ± 1/2 to midvein (often with additional incisions nearly to midvein), undivided medial blade 3–15 mm wide, teeth 3–7 per side (sometimes secondarily toothed), linear to lanceolate, 3–10 mm, surfaces similar, green, not glaucous, long hairs nearly absent or sparse to common (sometimes restricted to abaxial veins), short, crisped, and cottony hairs usually absent, glands usually absent, sometimes regionally abundant.

(0–)1–2.

1–3.

3–6(–10)-flowered, loosely cymose, sometimes racemiform.

3–15-flowered.

(0.5–)1–2(–4.5) cm, ± recurved in fruit.

1–3(–6.5) cm.

epicalyx bractlets ± elliptic, 2–4(–6) × 1–2(–2.5) mm;

hypanthium 3–6 mm diam.;

sepals 4–6(–8) mm, apex acute;

petals 4–8(–10) × 3–7(–9) mm;

filaments 2–3.5 mm, anthers 0.7–1 mm;

carpels 10–30, styles (1.5–)2–3 mm.

epicalyx bractlets lanceolate to narrowly elliptic, 3–5 × 1–1.6 mm, hairs usually sparse, appressed to ascending, glands usually absent, sometimes regionally sparse to common;

hypanthium (3–)4–6(–7) mm diam.;

sepals 5–10 mm, apex acute to acuminate;

petals (6–)7–12 × 5–10 mm;

filaments 2–3.5 mm, anthers 0.7–1 mm;

carpels (20–)25–40, styles filiform above papillate-swollen base, 2–3 mm.

1.5–2 mm, smooth, often ± carunculate.

1.5–2 mm.

= 64, 92, 96, 98–108.