Flora of North America species comparison

ascending to erect, (1–)2–5 dm.

prostrate to ascending, 2–5(–7) 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, 10–22 × 1.5–3.5 cm;

petiole (2–)4–10 cm, straight hairs absent or sparse, appressed, 0.5–1.5 mm, stiff, cottony hairs absent, glands absent;

primary lateral leaflets 3–8 per side, on distal 1/3–2/3 of leaf axis, ± separate, largest ones cuneate to obovate, 1–2.2 × 0.8–1.5 cm, distal 1/3–2/3 of margin ± evenly incised ± 1/2 to midvein, ultimate teeth 3–6, ± ovate, 2–6 × 1.5–3 mm, apical tufts absent, surfaces green, not glaucous, straight hairs sparse to nearly absent (except on margins), ± appressed, 0.5–1 mm, stiff, cottony hairs absent, glands absent or sparse.

2–4.

1–3.

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

3–10(–20)-flowered, very openly cymose, sometimes racemiform.

0.2–0.8 cm (proximal to 2 cm).

1.5–3.5(–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 ovate-elliptic, 2.5–4(–5) × 1.5–3 mm, sometimes toothed;

hypanthium 4–6 mm diam.;

sepals 4–6(–7) mm, apex acute, rarely acuminate;

petals 4.5–10 × 4–10 mm;

filaments 1.5–3(–4.5) mm, anthers 0.7–1 mm;

carpels 5–10, styles 2–3 mm.

1–1.2 mm, smooth to faintly rugose.

1.8–2 mm, smooth to faintly rugose, possibly carunculate.

= 56.