Flora of North America species comparison

ascending to erect, (1–)2–5 dm.

0.2–1 dm, lengths 1–1.5 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.

palmate, 2–8 cm;

petiole 0.5–5 cm, straight hairs sparse to abundant, sometimes absent, ± appressed, 2–3 mm, usually ± stiff, cottony hairs absent, glands absent;

leaflets (3–)4–5, at tip of leaf axis, separate, proximal pair separated from others by 0(–1) mm of leaf axis, central leaflets narrowly cuneate-oblanceolate, 0.8–2.2 × 0.2–0.5 cm, petiolules 0(–1) mm, less than distal 1/4 of margins incised 1/2–3/4 to midvein, teeth 1(–2) per side, ± separate, 1–2 mm, surfaces similar, green, straight hairs mostly absent (except on margins), appressed, 1–2 mm, stiff, cottony hairs absent, glands absent, rarely sparse.

2–4.

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

solitary flowers or 2–3-flowered.

0.2–0.8 cm (proximal to 2 cm).

1–4 cm.

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 narrowly to widely elliptic-ovate, 2–3.5 × 1–1.5 mm;

hypanthium 3–5 mm diam.;

sepals 3–5 mm, apex obtuse to acute;

petals 5–7 × 4–6 mm;

filaments 1–2 mm, anthers 0.4–0.8 mm;

carpels 5–20, styles 2 mm.

1–1.2 mm, smooth to faintly rugose.

1.5 mm, smooth.

= 56.