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Plants 80–100 cm tall. Stems sulcate, glabrous. Stipules green, semicordate or ovate-lanceolate, herbaceous, margin sharply serrate; petiole glabrous; leaf blade pinnate, with 2–5 pairs of leaflets, abaxially white tomentose, sometimes a few basal leaflets glabrescent, adaxially glabrous; terminal leaflet 3–5-lobed, slightly smaller to slightly larger than lateral ones, lobes lanceolate to oblong-lanceolate, margin doubly serrate or slightly lobed, apex acuminate; lateral leaflets oblong-ovate or elliptic-lanceolate, base rounded, margin doubly serrate, apex acuminate. Inflorescence terminal, paniculate. Flowers bisexual, ca. 5 mm in diam.; pedicel sparsely pubescent. Sepals ovate, densely pubescent abaxially, apex obtuse or acute. Petals white, obovate. Achenes attached to receptacle adaxially near base, subsessile, spirally contorted and appearing united. Fl. and fr. Jun–Sep. 2n = 14.
Pls 1–2 m; terminal lfl rotund in outline, 6–15 cm wide, deeply divided into 3–5-ovate or ovate-oblong, serrate segments; lateral lfls 2–5 pairs, 2–8 cm, oblong to ovate, coarsely and sharply doubly serrate, seldom shallowly lobed; sep ovate-triangular, obtuse, pet 5(6) white, 2–5 mm; frs glabrous, 3–4 mm, tightly and spirally imbricated, each going through about a half-turn; 2n=14, 16, 24. Native of Eurasia, occasionally escaped from cult., especially northeastward. June–Aug. Var. ulmaria has the lfls closely tomentose beneath; var. denudata (J. Presl & C. Presl) Beck has the lfls green and sparsely hairy beneath with long straight hairs.
A herb. It keeps growing from year to year. It grows 50-125 cm tall and 30-60 cm wide. The stems are erect and reddish. The leaves are dark green above and silvery underneath. The leaves have leaflets along the stalk. The leaves are elm like. There are 5 pairs of larger leaflets. There are teeth along the edge. The flowers are small and creamy white. They have a sweet smell. They are in dense groups.
