Flora of North America species comparison

ascending to erect, (1–)2–5 dm.

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

subpinnate to subpalmate, (6–)10–25 cm;

petiole (2–)5–15 cm, long hairs dense, appressed, 1–2 mm, soft to ± stiff, short hairs absent, crisped hairs sparse, glands absent, sparse, or obscured;

leaflets 2–3 per side, on distal 1/6–1/3(–1/2) of leaf axis, separate to ± overlapping, terminal ones oblanceolate, (2–)3–6(–10) × 1–2(–3.5) cm, margins revolute, incised 3/4+ to midvein, undivided medial blade 1.5–6 mm wide, teeth 5–8 per side, ± linear, surfaces ± to strongly dissimilar, abaxial usually white, rarely grayish, long hairs abundant especially on veins, 1–2 mm, ± weak, short hairs absent or obscured, cottony (and crisped) hairs ± dense, glands absent or obscured, adaxial green to grayish, long hairs sparse to abundant, loosely appressed, 0.5–1.5 mm, short hairs absent or sparse, crisped and/or cottony hairs sparse to common, glands sparse to common.

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.

2–4.

(0–)1–2.

(4–)10–50(–100)-flowered, congested or elongating in fruit.

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

0.2–0.8 cm (proximal to 2 cm).

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

epicalyx bractlets narrowly elliptic to lanceolate, 2.5–6 mm, lengths ± 2/3 times sepals, margins flat;

hypanthium 3–5 mm diam.;

sepals 3–6 mm, apex ± acute, abaxial surfaces: venation indistinct, glands absent, sparse, or obscured;

petals yellow, 3–5 × 3–4 mm, lengths ± equal to sepals;

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

carpels 50–80, styles papillate-swollen in proximal 1/2–3/4+, 1–1.2 mm.

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.

1–1.2 mm, smooth to faintly rugose.

1.5–2 mm, smooth, often ± carunculate.

= 56.