Flora of North America species comparison

often sheathed with marcescent whole leaves.

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

ascending to nearly erect, 0.3–1.5 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.

often both ternate and palmate or subpalmate on same plant, 1–5 cm;

petiole 0.5–3 cm, long hairs sparse to dense, ± appressed to ascending, (1–)1.5–2.5 mm, soft to ± weak, smooth, short hairs absent or sparse, crisped(/cottony) hairs sparse to common, glands absent or sparse;

leaflets 3–5, proximalmost separated by 0–2 mm, central broadly elliptic to obovate, 0.5–2 × 0.3–1.4 cm, petiolules ± 1 mm, distal 2/3 to nearly whole margin incised 2/3–3/5+ to midvein, teeth (2–)3–4 per side, 3–5 mm, apical tufts 1–1.5 mm, abaxial surfaces grayish white to white, long hairs common to abundant, cottony(/crisped) hairs dense, short hairs and glands absent or obscured, adaxial grayish green to gray, long hairs abundant, 1–2 mm, soft (grading to cottony), short/crisped/cottony hairs common to abundant, glands sparse to common.

(0–)1–2.

0–1.

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

1–3(–4)-flowered, open, branch angle 20–40°.

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

1–1.5 cm, proximal to 3 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 ovate, 3–4 × 1–2 mm;

hypanthium 2.5–3.5 mm diam.;

sepals 3.5–5 mm, apex obtuse to subacute, glands sparse to common, often ± obscured;

petals pale yellow, often overlapping, 5–7 × 5–8(–9) mm, distinctly longer than sepals;

filaments 0.5–1.5 mm, anthers ± 0.5 mm;

carpels 30–60, styles 0.8–0.9 mm.

1.5–2 mm, smooth, often ± carunculate.

1–1.3 mm.