Flora of North America species comparison

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

ascending to erect, 0.5–2(–3) dm, lengths 1.5–3 times basal leaves.

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.

2-ranked, usually palmate, sometimes ternate, 2–10(–15) cm;

stipules: apex obtuse to truncate, rarely acute;

petiole 0.5–6.5(–10) cm, long hairs usually ± sparse, usually ± ascending, sometimes spreading or appressed, 1–2.5 mm, weak to ± stiff, glands absent or sparse;

leaflets 3–5, central obovate, 1.5–3(–3.5) × 0.8–1.5(–2) cm, petiolule 0–1 mm, margins flat, not lobed, distal 1/2–2/3 evenly incised 1/3–1/2 to midvein, teeth 3–4(–5) per side, not secondarily toothed, surfaces similar, green, not glaucous, hairs absent or sparse, rarely common, 0.8–1.5 mm, glands absent or sparse to abundant (fewer adaxially).

(1–)2–12-flowered.

(2–)3–8(–12)-flowered.

1–2(–3) cm.

straight, 1–3(–4) cm in flower, to 6 cm in fruit.

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 ovate or narrowly ovate, (1.5–)2.5–4 × (0.8–)1–1.3 mm, margins flat;

hypanthium 3–4 mm diam.;

sepals (3–)4–5(–6) mm, apex broadly acute;

petals yellow, 4–7(–9) × 4–8 mm;

filaments 1.8–2.2 mm, anthers 0.3–0.6 mm;

carpels 30–40, styles columnar-filiform, not papillate-swollen proximally, 1–1.6 mm.

1.5–2.5 mm, smooth to lightly rugose.

1.2 mm.

= 70.

= 42; 28, 35, 49 (Europe).