Flora of North America species comparison

prostrate to ascending, (0.3–)1–2.5(–3) dm.

alternate, rarely opposite, pinnately (palmately) compound (simple in Alchemilla, Aphanes, and Chamaerhodos);

stipules persistent (absent in Chamaerhodos), adnate to petiole;

venation pinnate or palmate.

4–8(–10) cm; sheathing base sparsely to densely strigose abaxially;

stipules lanceolate, 1–2 mm;

petiole (0.5–)1–3 cm, hairs abundant, spreading, (1–)3–5 mm;

leaflets 25–35 per side, tightly overlapping, (1–)2–3.5 mm, lobes 2–3, elliptic to obovate or oval, hairs dense, appressed to ascending, 0.5–1.5 mm.

(1–)2–3.

(5–)10–30-flowered, (1–)1.5–4(–6) cm diam., flowers arranged in 1–several ± tight glomerules of 10–20(–30) flowers.

1–3 mm.

7–9 mm diam.;

epicalyx bractlets mostly linear to narrowly ovate, 0.8–2(–2.5) mm;

hypanthium cupulate, (1–)1.5–2 × (2–)2.5–3(–3.5) mm, 1/2–2/3 as deep as wide;

sepals sometimes purple-suffused, 2–3(–4) mm, acute;

petals white, obovate, (2–)3–4(–4.5) mm;

stamens 20, filaments flattened, 0.6–1.3 mm, anthers yellowish, 0.3–0.5 mm;

carpels 4–8, styles 1.5–2.2 mm.

perianth and androecium perigynous;

epicalyx bractlets present, sometimes absent;

hypanthium usually patelliform, cupulate, or campanulate, sometimes turbinate, saucer-shaped, flat-bottomed, or subglobose to ellipsoid or ovoid;

torus flat to conic or turbinate, enlarged (absent or reduced in Alchemilla, Aphanes, and Chamaerhodos);

carpels 1–260, styles basal or lateral to subterminal, distinct;

ovules 1(or 2), basal.

aggregated achenes (achenes in Alchemilla and Aphanes);

torus sometimes fleshy;

styles deciduous or persistent, not elongate.

brown, (1.5–)2–2.5 mm.