Flora of North America species comparison

0.2–1.6 dm, lengths 1/2–3(–4) times basal leaves.

decumbent to ascending, rarely erect, 1–5 dm.

usually palmate to subpalmate, sometimes subpinnate, 1(–2) pair of leaflets separate from terminal leaflets, distal leaflets distinct, 2–10(–15) cm;

petiole 1–7(–10) cm, straight hairs ± abundant, ± appressed, 1–3 mm, stiff to weak, cottony hairs present, sometimes absent;

leaflets 5(–7), on tip or to distal 1/4 of leaf axis, separate to ± overlapping, proximal pair separated from others by 0–5(–10) mm of leaf axis, central leaflets narrowly oblanceolate to obovate, 1–3(–7) × 0.4–1.2 cm, petiolules 0–2(–4) mm, distal 1/4 to whole margin incised 1/4–3/4+ to midvein, teeth (1–)2–5(–10) per side, separate, 1–6 mm, surfaces strongly to ± dissimilar, abaxial grayish to white, straight hairs ± abundant, ± appressed, 0.5–2 mm, weak to stiff (especially on veins), cottony hairs ± dense, rarely sparse, glands sparse or obscured, adaxial green to grayish, straight hairs common to abundant, appressed, 0.5–2 mm, mostly stiff, sometimes weak or mixed, cottony hairs absent or sparse, rarely common, glands ± sparse.

subpinnate, 7–22(–25) cm;

petiole 3–12(–15) cm, long hairs ± abundant, appressed to ascending, 0.5–3 mm, stiff, short hairs absent, cottony or crisped hairs absent, glands absent or sparse;

leaflets 3(–4) per side, on distal 1/5–1/3(–1/2) of leaf axis, overlapping or not, terminal ones oblong to broadly oblong, 1.5–5 × 0.7–2 cm, margins strongly revolute, incised nearly to midvein, undivided medial blade 1–3 mm wide, teeth (3–)4–5 per side, linear, rarely narrowly oblong to narrowly lanceolate, surfaces strongly dissimilar, abaxial white or grayish white, long hairs abundant, ± 1 mm, stiff verrucose on veins, sparse and soft between veins, short hairs absent, crisped and cottony hairs dense, glands absent, adaxial dark green, long hairs sparse to common, tightly appressed, 0.5–1 mm, short hairs absent, cottony and crisped hairs absent, glands absent or sparse.

(1–)2–3.

(1–)2–12-flowered.

(5–)10–40+-flowered, ± congested to open.

1–2(–3) cm.

0.3–1 cm (proximal to 3 cm).

epicalyx bractlets lanceolate to narrowly ovate to linear-elliptic, sometimes doubled, (2–)2.5–5 × 1–1.5 mm;

hypanthium 3–6 mm diam.;

sepals 3.5–6 mm, apex acute;

petals (2.5–)4–9 × (2–)3–7 mm;

filaments 1–3 mm, anthers 0.5–1 mm;

carpels (7–)10–30, styles (1–)1.5–2 mm.

epicalyx bractlets linear to narrowly oblong-lanceolate, 3–5 × 0.9–1.3 mm, lengths ± 3/4 times sepals, margins flat;

hypanthium 2.5–3.5 mm diam.;

sepals 4–7(–8) mm, apex acute to obtuse, abaxial surfaces: venation prominent at least proximally, glands ± sparse, obscured to evident;

petals pale yellow, 3.5–5 × 3–5 mm, lengths ± equal to sepals;

filaments 0.5–1.5 mm, anthers 0.5–0.6 mm;

carpels 40–60, styles papillate-swollen at very base, if at all, 0.8–0.9 mm.

1.5–2.5 mm, smooth to lightly rugose.

1.3–1.5 mm, rugose.

= 70.

= 28.