Flora of North America species comparison

0.4–1.5(–2) dm, lengths 2 times basal leaves.

petiole 1–3.5 cm, long hairs ± abundant, 0.5–1.5 mm, short hairs absent or sparse, rarely common;

leaflets 0.2–1 cm, lobes oblanceolate to narrowly elliptic, (0.5–)1–2 mm wide, longs hairs ± abundant, short hairs absent or sparse, glands sparse to abundant.

subpinnate to pinnate, usually at least 2 pairs of leaflets separate from terminal leaflets, distal leaflets often confluent, 2–7 cm;

petiole 1–4(–8) cm, straight hairs abundant, ± appressed to ascending, 1–2 mm, stiff to weak, cottony hairs sometimes present, glands absent or obscured;

leaflets 5–9(–11), on distal 1/5–1/2 of leaf axis, strongly overlapping, proximal pair separate from others by 1–5 mm of leaf axis, central leaflets oblanceolate to obovate, sometimes lobed, (0.5–)1–1.5 × 0.5–1 cm, petiolules 0–1 mm, distal 2/3 of margins incised 1/2+ to midvein, teeth 2–5 per side, touching, 1–3 mm, surfaces ± dissimilar, abaxial white, straight hairs ± abundant, ± appressed, 1–1.5 mm, weak to stiff, cottony hairs ± dense, glands absent or obscured, adaxial greenish gray, straight hairs sparse to abundant, usually appressed, sometimes ascending, 1 mm, usually ± stiff, sometimes soft, cottony hairs sparse, glands obscured.

(1–)3–6(–10)-flowered.

0.8–2 cm.

epicalyx bractlets broadly lanceolate to elliptic, 1.5–4(–5) × (0.4–)0.8–1.3 mm;

sepals 2–4(–5) mm, apex ± acute;

petals (3–)4–6 × (2–)3–5 mm;

filaments 1–2(–2.5) mm, anthers 0.4–0.6 mm;

carpels 20–50.

epicalyx bractlets lanceolate to ovate-elliptic, 2.5–4 × 0.8–1.5 mm;

hypanthium 3–4 mm diam.;

sepals (3–)3.5–5.5(–6) mm, apex ± acute;

petals 6–7 × 5–7 mm;

filaments 1.5–3 mm, anthers 0.8–1 mm;

carpels 15–20, styles 2–2.5 mm.

0.9–1.2 mm.

1.5–2 mm, smooth.