Flora of North America species comparison

mostly decumbent to ascending, 1–6 dm.

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

palmate.

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.

2–9, proximal ones 2–7(–10) cm;

proximal petioles 1–4(–7) cm, long hairs absent or sparse, ± ascending, 1–2 mm, soft, short and crisped hairs absent or obscured, cottony hairs dense, glands absent or obscured;

leaflets 5(–7), central one ± oblanceolate, (0.5–)1–3 × 0.3–1(–1.3) cm, margins revolute, distal 1/2–2/3 evenly or unevenly incised 1/2–3/4+ to midvein, teeth 2–3 per side (more if lobed or secondarily toothed), surfaces strongly dissimilar, abaxial white, long hairs ± sparse (mostly on veins), 1–2 mm, weak, short and crisped hairs absent or obscured, cottony hairs dense, glands absent or obscured, adaxial long hairs absent or sparse to common, short or crisped hairs absent or sparse, cottony hairs absent, glands absent or sparse.

1–3(–4).

10–80-flowered.

(5–)10–30-flowered.

0.3–1.5(–2) cm.

0.5–2(–4) cm.

epicalyx bractlets oblong to narrowly ovate, 1.5–3 × 0.7–1.2 mm, lengths 2/3–1 times sepals;

sepals 2–4.5 mm, apex ± acute;

petals (2–)2.5–4 × 1.5–3 mm;

filaments 0.8–1.5 mm, anthers 0.3–0.6(–0.8) mm;

carpels 30–60, styles 0.6–0.9 mm, often strongly papillate-swollen proximally.

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.

0.8–1.1 mm, smooth to lightly rugose.

1.4–1.7 mm, smooth or slightly rugose.

= 14, 28, 35, 42, 56, 62 (Eurasia).