Flora of North America species comparison

(0.5–)1.5–4.5 dm, lengths 2–4(–5) times basal leaves.

ascending to erect, 2–5 dm.

pinnate, 3–15(–20) cm;

petiole 1–10(–15) cm, long hairs dense, appressed, 1.5–2.5 mm, usually stiff, short and crisped hairs usually absent, cottony hairs absent, glands sparse, often obscured;

leaflets often conduplicate, lateral ones evenly paired, (3–)4–6(–7) per side on distal 1/3–2/3 of leaf axis, distal pairs ± decurrent, often confluent with terminal leaflet, larger leaflets narrowly cuneate or oblanceolate to obovate, 1–3(–4) × 0.2–0.8(–1) cm, distal 1/4–1/2(–2/3) or less of margin incised ± 1/4 or less to midvein, teeth (0–)1–5(–9) per side, 1–2 mm, surfaces ± similar to ± dissimilar, abaxial silvery to greenish, long hairs usually dense (at least on primary veins), 1–2 mm, stiff, short-crisped hairs absent or sparse, cottony hairs usually absent, glands sparse to common, often obscured, adaxial ± green, long hairs sparse to common, sometimes absent, short, crisped, and cottony hairs absent, glands sparse.

palmate or ternate.

1–3(–4).

3–8, proximal ones (3–)5–14 cm;

proximal petioles (1–)2–10 cm, long hairs sparse to common, spreading to loosely appressed, 1–2 mm, weak, short or crisped hairs sparse to common, cottony hairs absent, glands absent or sparse;

leaflets usually 5, central one oblanceolate to obovate, 2–4.5 × 1–2.5 cm, margins ± flat, distal 3/4+ usually unevenly, sometimes evenly, incised 1/3–2/3 to midvein (often with 1–2 incisions nearly to midvein), teeth 5–10 per side, surfaces similar or ± dissimilar, abaxial green to grayish green, long hairs sparse to common (especially on veins), 0.5–1.5 mm, soft to weak, short or crisped hairs ± sparse, cottony hairs absent, glands absent or sparse, adaxial long hairs absent or sparse, 1 mm, short hairs absent or sparse, crisped and cottony hairs absent, glands absent or sparse.

(5–)10–30-flowered.

20–100+-flowered.

0.5–2(–4) cm.

0.5–1.5(–2.5) cm.

epicalyx bractlets lanceolate, 1.5–4.5 × 0.5(–1) mm, 1/2–2/3 as long as sepals, abaxial vestiture similar to or ± sparser than sepals, not glabrescent, straight hairs common, crisped or cottony hairs usually absent;

hypanthium 2.5–5 mm diam.;

sepals (3–)4–7 mm, apex acute to long acuminate;

petals (3–)4.5–7.5(–8) × 4–6 mm;

filaments 1–3 mm, anthers 0.6–1.1 mm;

carpels 5–20, styles 1.6–2.6 mm.

epicalyx bractlets lanceolate to ovate or elliptic, 2–5 × 0.8–1.5 mm, lengths usually 2/3, sometimes 1, times sepals;

sepals 3.5–6.5 mm, apex ± acute;

petals 3–5 × 2–3 mm;

filaments 0.8–2 mm, anthers 0.3–0.5 mm;

carpels 40–70, styles 1–1.2 mm, scarcely papillate-swollen proximally.

1.4–1.7 mm, smooth or slightly rugose.

1 mm, rugose.

= 28, 56 (Eurasia).