Achillea atrata, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 161

9. A. atrata L. , Sp. Pl. 899 (1753).

Plant odourless. Stems up to 30 cm, simple, erect, at least the upper part densely brownpubescent. Leaves 1-4 cm, usually 2-pinnatifid; primary segments with not more than 3 lanceolate, acute, distant lobes, subglabrous, not punctate. Corymbs with 2-10 capitula; peduncles 3-15 mm, usually brown-pubescent. Involucre 8-12 mm in diameter; bracts c. 5 mm, lanceolate, with a wide, darkish brown margin. Ligules c. 6 mm, obovate, white. 2л =18. Rock-crevices, screes and stony pastures; usually calcicole. • Alps. Au Ga Ge He It Ju.

Hybrids with 3(a) are frequent.