Flora of North America species comparison

not sheathed with marcescent whole leaves.

ascending to erect, (1–)2–5 dm.

ascending to nearly erect, 1.5–4 dm.

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.

often both ternate and palmate on same plant, rarely subpalmate, 4–10 cm;

petiole 2.5–7 cm, long hairs sparse to common, loosely appressed to ascending-spreading, 1–2 mm, ± weak to stiff, verrucose, short and/or ± crisped hairs common to abundant, cottony hairs absent, glands usually sparse;

leaflets 3–5, proximalmost separated by 0(–1) mm, central oblong to obovate, 1.5–4 × 1–2.5 cm, petiolules 0–5 mm, distal 2/3–3/4 of margin incised 1/2–3/4, rarely +, to midvein, teeth (4–)5–8 per side, 4–5 mm, apical tufts 1 mm, abaxial surfaces gray to grayish white, long hairs abundant, cottony-crisped hairs usually dense, short hairs and glands absent or obscured, adaxial green to grayish green, long hairs sparse to common, 0.5–1.5 mm, stiff, short hairs absent or sparse, rarely common, crisped and cottony hairs absent, glands absent or sparse, rarely common.

2–4.

2–3.

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

4–20-flowered, open, branch angle (10–)20–45°.

0.2–0.8 cm (proximal to 2 cm).

0.5–3 cm, proximal to 5 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 linear to narrowly lanceolate, 3–4 × 0.8–1.2 mm;

hypanthium 4–6 mm diam.;

sepals 4–5 mm, apex subacute to acute, glands usually ± sparse, not obscured;

petals pale yellow, not overlapping, 5–7 × (4–)5–6.5 mm, distinctly longer than sepals;

filaments 0.5–1.5 mm, anthers 0.4 mm;

carpels 30–60, styles 0.9–1.1 mm.

1–1.2 mm, smooth to faintly rugose.

1.2 mm.

= 56.

= 56.