Flora of North America species comparison

± erect, not flagelliform, not rooting at nodes, lateral to persistent basal rosettes, (0.1–)0.5–1(–1.5) dm, lengths 1.5–3 times basal leaves.

basal sometimes 2-ranked;

cauline leaves 0(–1);

primary leaves ternate, appearing ± palmate, 2–7 cm;

petiole: long hairs absent or spreading to ascending, weak, glands usually absent;

leaflets 3, at tip of leaf axis, separate, cuneate-ovate in outline, margins strongly revolute, central leaflets divided nearly to base into 3 equal lobes, lateral divided nearly to base into 2 lobes, lobes entire, rarely again 2-fid, surfaces ± dissimilar, abaxial whitish with thick waxy bloom, cottony hairs absent, adaxial light green, often purple-tinged, not glaucous, long hairs weak or absent.

alternate, rarely opposite, pinnately compound, sometimes simple or palmately compound;

stipules present, rarely absent.

solitary flowers or 2–3(–4)-flowered, ± cymose, open.

straight in fruit, 0.5–1.5(–2) cm, proximal not much longer than distal.

5-merous;

hypanthium 2–2.5 mm diam.;

petals pale yellow to yellow, ± obcordate, 6–10 mm, longer than sepals, apex retuse;

stamens ca. 20;

styles subapical, filiform-tapered, not papillate-swollen proximally, 2.5–4 mm.

torus usually enlarged, sometimes small or absent;

carpels 1–260(–450), distinct, free, styles distinct, rarely connate (Roseae);

ovules 1(or 2), collateral (Rubeae) or superposed (Fallugia, Filipendula).

achenes or aggregated achenes sometimes with fleshy, urn-shaped hypanthium or enlarged torus, sometimes aggregated drupelets;

styles persistent or deciduous, not elongate (elongate but not plumose in Geum).

smooth.

= 7(8).