Flora of North America species comparison

conspicuous, usually golden.

ascending to erect, (0.3–)1–3 dm, lengths 2 times basal leaves.

ascending to nearly erect, (1.5–)3–7 dm.

2-ranked, ternate, (1–)3–12(–20) cm;

stipules: apex rounded;

petiole (0.5–)1–15(–18) cm, hairs and glands usually absent;

leaflets 3, central widely obovate to flabellate, (0.5–)1–5 × (0.4–)1–3(–3.5) cm, petiolule 0–5(–10) mm, margins flat, not or shallowly lobed (sinuses extending less than 1/2 to midvein), distal 1/2–3/4 usually unevenly incised 1/4–1/2 to midvein, teeth 3–7 per side, often secondarily toothed, surfaces similar, green, hairs absent or sparse, rarely common, 0.5–1 mm, glands absent or sparse.

sometimes 2-ranked, palmate, (5–)10–30 cm;

petiole (1.5–)5–25(–50) cm, long hairs sparse to abundant, appressed to spreading, 1–2 mm, ± stiff, short, crisped, and cottony hairs absent, glands ± abundant;

leaflets (5–)7–9, at tip of leaf axis, separate to slightly overlapping, largest ones oblanceolate-elliptic to narrowly obovate, (2–)5–10 × 1–4 cm, margins flat to ± revolute, distal 3/4 to nearly whole length ± evenly incised (1/4–)1/2–3/4+ to midvein, undivided medial blade 2–15(–20) mm wide, teeth (5–)7–10 per side, linear to broadly lanceolate, 3–15 mm, surfaces ± similar, abaxial paler, green, not glaucous, long hairs sparse to common, short-crisped hairs absent or sparse, cottony hairs absent, glands ± abundant.

1–3(–4).

1–6-flowered.

12–30(–70)-flowered.

straight, 0.3–4.5(–5) cm, not much longer in fruit than in flower.

0.2–1(–4) cm.

epicalyx bractlets often toothed or 2-lobed, elliptic to oval, 3.5–7 × (1–)1.5–3 mm, margins flat;

hypanthium 3–7 mm diam.;

sepals 4–8 mm, apex acute to obtuse;

petals dark yellow, (5–)6–10(–12) × (3–)5–10 mm;

filaments 1.5–3 mm, anthers 0.6–1.5 mm;

carpels 20–50, styles filiform, not or slightly papillate-swollen proximally, 1.6–2.5 mm.

epicalyx bractlets lanceolate to elliptic, 3–6 × 1–2 mm, hairs sparse to common, loosely appressed to spreading, glands common to abundant;

hypanthium 4–6(–8) mm diam.;

sepals 4–8(–9) mm, apex acute to acuminate;

petals 6–9 × 6–10 mm;

filaments 1–2 mm, anthers 0.6–1 mm;

carpels 30–60, styles filiform-tapered, papillate-swollen proximally, 1.5–2 mm.

1.2–1.5 mm.

1.5 mm.

= 28.