Flora of North America species comparison

absent or inconspicuous, uncolored.

mostly ± ascending, 0.5–3(–4.5) dm.

ascending to erect, 0.2–2(–2.5) dm, lengths 1–3(–4) times basal leaves.

often 2-ranked, palmate, sometimes subpalmate, 2–20 cm;

petiole (0.5–)1–8(–14) cm, long hairs often absent, sometimes sparse to abundant, usually appressed, 1–2 mm, weak to ± stiff, short, crisped, and cottony hairs absent, glands absent or sparse;

leaflets 5–6(–7), sometimes with 1–2(–4) additional, smaller, entire leaflets, on tip or to distal 1/10(–1/4) of leaf axis, separate, largest ones oblanceolate or cuneate to obovate, 1–4(–6) × 0.5–1.5(–2) cm, margins flat, distal 1/3–1/2(–2/3) ± evenly incised 1/2 or nearly to midvein, undivided medial blade 1.5–7(–10) mm wide, teeth 1–3(–5) per side, broadly lanceolate or linear to narrowly oblong, 1–5(–8) mm, surfaces similar adaxial ± less hairy, ± blue-green, usually glaucous, long hairs sparse to abundant (often restricted to veins, distal teeth, and margins), short, crisped, and cottony hairs absent, glands absent or sparse.

not in ranks, ternate, (1–)2–8(–10) cm;

stipules: apex ± acute;

petiole 1–6.5(–8.5) cm, long hairs sparse to common, spreading to subappressed, 0.8–2 mm, weak to ± stiff, glands sparse to common;

leaflets 3, central obovate to broadly obovate, 0.5–2.5(–2.8) × 0.3–2(–2.2) cm, petiolule 0–3 mm, margins flat or slightly revolute, not lobed, distal 1/2–2/3(–3/4) evenly incised ± 1/2 to midvein, teeth (2–)3–5 per side, surfaces ± similar, abaxial usually pale green, sometimes grayish, hairs sparse to abundant, 0.5–1.7 mm, adaxial darker green, hairs and glands sparse.

(0–)1–2(–3).

2–10(–20)-flowered.

1–3(–5)-flowered.

(0.5–)1–3(–6.5) cm.

straight, 0.3–3 cm in flower, to 9 cm in fruit.

epicalyx bractlets lanceolate to elliptic, 2–5 × 0.8–1.2(–1.6) mm, hairs sparse to common, rarely abundant, ± ascending, glands absent or inconspicuous;

hypanthium 3.5–5 mm diam.;

sepals (2–)2.5–4.5(–5) mm, apex acute to short acuminate;

petals (4–)5–10(–12) × 4–9(–10) mm;

filaments 1.5–2.5(–3) mm, anthers 0.4–0.7(–0.9) mm;

carpels 25–40, styles filiform above papillate-swollen base, 1.5–2.5(–3) mm.

epicalyx bractlets narrowly to broadly oblong or ovate, 3.5–7 × 1.5–5 mm, margins flat;

hypanthium 4–7 mm diam.;

sepals 4–8 mm, apex subacute to rounded;

petals pale or bright yellow, 4–9 × 4–6 mm;

filaments 0.5–1.1 mm, anthers 0.2–0.4 mm;

carpels 50–80, styles ± columnar, not or scarcely papillate-swollen proximally, 0.6–0.9 mm.

1.2–1.6 mm.

1.1–1.3 mm.