Flora of North America species comparison

absent or inconspicuous, uncolored.

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

ascending to nearly erect, (1–)2–5(–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.

not in ranks, ± subpalmate to subpinnate (proximal leaflets sometimes doubled, distal leaflets confluent and/or decurrent), (2–)5–20(–28) cm;

petiole (1–)3–15(–20) cm, long hairs abundant, appressed to ascending-spreading, 1–2.5 mm, weak often flattened and twisted, sometimes grading to crisped or cottony hairs, short hairs absent, glands absent or sparse;

leaflets 5–7, on distal 1/10–1/4 of leaf axis, ± overlapping, largest ones usually ± obovate, (1–)1.5–5(–6) × 1–3.5(–4) cm, margins flat, distal 2/3–3/4 evenly to unevenly incised ± 1/2 to midvein (often with additional incisions nearly to midvein), undivided medial blade 4–20 mm wide, teeth (2–)3–6(–8) per side (sometimes secondarily toothed), ± lanceolate, 4–11 mm, surfaces ± similar, abaxial ± lighter and hairier, gray-green to grayish, rarely green, not glaucous, long hairs ± abundant, short-crisped hairs absent or sparse to common, cottony hairs usually absent, glands absent or sparse.

(0–)1–2.

1–2.

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

5–50-flowered.

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

0.5–3(–4) 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 broadly lanceolate to elliptic, 3–6(–7.5) × 1.5–2.5(–3) mm, hairs ± common to abundant, loosely appressed to ascending, glands absent or inconspicuous;

hypanthium 3.5–5.5 mm diam.;

sepals 5–10 mm, apex acute to acuminate;

petals 5–10 × 5–10 mm;

filaments 1–2.5 mm, anthers 0.7–1.2 mm;

carpels 15–30, styles filiform-tapered, papillate-swollen proximally, 2–3 mm.

1.5–2 mm, smooth, often ± carunculate.

1.4–1.6 mm.

= 63–73, 79, 87, 98, 129.