Flora of North America species comparison

stout, usually columnar, sometimes sheathed with marcescent whole leaves.

prostrate to ascending, (0.7–)1.5–2.5(–4) dm, lengths 2–4(–5) times basal leaves.

erect, (0.2–)0.3–1.5(–2) dm, lengths 1.5–2.5(–3.5) times basal leaves.

pinnate with distal leaflets ± confluent, 4–12 × 1–2.5(–3.5) cm;

petiole 1–3 cm, straight hairs absent (on early-season petioles) or sparse to common, spreading-ascending to loosely appressed, 1–2 mm, soft, cottony hairs usually absent, glands sparse;

primary lateral leaflets 3–5 per side, on distal (1/3–)1/2–2/3 of leaf axis, overlapping, largest ones cuneate to flabellate, 0.5–1.5(–2) × 0.5–1.5 cm, distal 3/4 to whole margin unevenly incised 2/3 to completely to midvein (blade often medially split as well), ultimate teeth or segments 2–5(–8), ± oblanceolate, 3–11 × 1–3 mm, apical tufts to 1 mm, surfaces green to grayish green, not glaucous, straight hairs sparse to common (sparser adaxially), sometimes absent (except on margins), loosely appressed to ascending, 1–2 mm, soft, cottony hairs absent, glands sparse to common.

(1–)2–10(–15) cm;

petiole (0.5–)1–5(–12) cm, long hairs common to dense, ± ascending to loosely appressed, sometimes spreading, 1–2 mm, ± soft, smooth, crisped/short-cottony hairs usually sparse, sometimes absent or common, glands absent, sparse, or obscured;

leaflets separate to slightly overlapping, central obovate or obtriangular, (0.5–)1–2(–3) × (0.4–)0.8–1.5(–2) cm, sessile or subsessile, base cuneate, margins revolute, distal (1/3–)1/2–2/3(–3/4) incised 1/2–2/3(–3/4) to midvein, teeth 2–3(–4) per side, usually ± distant, surfaces somewhat to more often strongly dissimilar, abaxial yellowish or grayish white to white, long hairs 0.8–1.5 mm, cottony-crisped hairs ± dense, adaxial green to grayish green, long hairs sparse to ± abundant, other hairs usually absent.

1–2(–3).

(0–)1(–2).

(1–)3–10-flowered, usually openly cymose.

usually 1(–2)-flowered, rarely to 5-flowered.

1–3(–5) cm, straight to slightly recurved in fruit.

(0.5–)2–4 cm in flower, to 5 cm in fruit.

epicalyx bractlets lanceolate to elliptic, rarely ovate, 2–5 × 1–2 mm, sometimes apically toothed;

hypanthium 3–5 mm diam.;

sepals 4–7 mm, apex acute;

petals 4–7 × 3–5.5 mm;

filaments (1–)1.5–2.5 mm, anthers 0.5–0.8 mm;

carpels 10–25, styles 2 mm.

epicalyx bractlets elliptic-lanceolate to ovate, (3–)4–6(–7) × (0.8–)1.2–2(–2.5) mm, (1/2–)2/3 to as wide as sepals, margins revolute, rarely flat, red glands absent;

hypanthium 2.5–4 mm diam.;

sepals 4–6(–7) mm, apex subacute;

petals (5–)6–9 × (5–)7–9 mm, significantly longer than sepals;

filaments 1–1.3 mm, anthers 0.4–0.6 mm;

carpels 30–40, apical hairs absent, styles narrowly columnar to conic-tapered, papillate-swollen on proximal 1/5(–1/3), 0.9–1.1 mm.

1.5–1.8 mm, smooth to faintly rugose, not carunculate.

1.2–2 mm.

= 28, 42, 49, 56 (Russian Far East).