Flora of North America species comparison

prostrate to ascending, (0.7–)1.5–2.5(–4) dm, lengths 2–4(–5) times basal leaves.

decumbent to nearly erect, (0.2–)0.5–2.6 dm.

pinnate with distal leaflets ± confluent, 4–12 × 1–2.5(–3.5) cm;

petiole 1–3 cm, straight hairs absent (on early-season petioles) or sparse to common, spreading-ascending to loosely appressed, 1–2 mm, soft, cottony hairs usually absent, glands sparse;

primary lateral leaflets 3–5 per side, on distal (1/3–)1/2–2/3 of leaf axis, overlapping, largest ones cuneate to flabellate, 0.5–1.5(–2) × 0.5–1.5 cm, distal 3/4 to whole margin unevenly incised 2/3 to completely to midvein (blade often medially split as well), ultimate teeth or segments 2–5(–8), ± oblanceolate, 3–11 × 1–3 mm, apical tufts to 1 mm, surfaces green to grayish green, not glaucous, straight hairs sparse to common (sparser adaxially), sometimes absent (except on margins), loosely appressed to ascending, 1–2 mm, soft, cottony hairs absent, glands sparse to common.

subpinnate to subpalmate, 1.5–10(–17) cm;

petiole 0.5–4(–8) cm, long hairs ± abundant, spreading to loosely appressed, 0.5–2 mm, weak to stiff, short hairs absent or sparse, cottony or crisped hairs absent, glands sparse to abundant;

leaflets (1–)2–3 per side, on distal 1/6–1/3(–1/2) of leaf axis, separate to slightly overlapping, terminal ones oblanceolate-elliptic to narrowly obovate, (0.5–)1–2.5(–3.5) × 0.4–1(–1.3) cm, margins strongly revolute, incised 3/4+ to midvein, undivided medial blade 1.5–3(–5) mm wide, teeth (2–)3–5(–6) per side, ± linear-elliptic to rarely ovate or oblanceolate, surfaces ± dissimilar, abaxial ± grayish, rarely white, long hairs ± abundant especially on veins, 1 mm, weak, short hairs absent or sparse, cottony hairs absent, crisped hairs sparse to abundant, glands ± abundant, sometimes obscured, adaxial green to gray-green, long hairs sparse to abundant, loosely appressed, 0.5–1(–2) mm, short hairs absent or sparse, cottony and crisped hairs absent, glands ± abundant.

1–2(–3).

1–2.

(1–)3–10-flowered, usually openly cymose.

(1–)3–12(–20)-flowered, congested, scarcely opening in fruit.

1–3(–5) cm, straight to slightly recurved in fruit.

0.2–0.5 cm (proximal to 1.2 cm).

epicalyx bractlets lanceolate to elliptic, rarely ovate, 2–5 × 1–2 mm, sometimes apically toothed;

hypanthium 3–5 mm diam.;

sepals 4–7 mm, apex acute;

petals 4–7 × 3–5.5 mm;

filaments (1–)1.5–2.5 mm, anthers 0.5–0.8 mm;

carpels 10–25, styles 2 mm.

epicalyx bractlets elliptic to linear, 1.5–3 × (0.3–)0.5–1.2 mm, lengths 1/2–3/4 times sepals, margins flat;

hypanthium 2.5–5 mm diam.;

sepals 2–5 mm, apex usually ± acute to obtuse, rarely acuminate, abaxial surfaces: venation faint, glands abundant, evident;

petals pale yellow, 2–5 × 2–4 mm, lengths ± equal to sepals;

filaments 0.5–2 mm, anthers 0.3–0.7 mm;

carpels 20–60, styles papillate-swollen in proximal 1/2–3/4+, 0.8–1.2 mm.

1.5–1.8 mm, smooth to faintly rugose, not carunculate.

1 mm, smooth to faintly rugose.