Hieracium atratum

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 : 393

164. H. atratum group ( H. alpinumlmurorum ). Stems 20- 45(-60) cm, with dark-based, simple eglandular hairs and stellate and dark glandular hairs above. Leaves with more or less numerous simple eglandular hairs, and usually with minute glandular hairs on the margin; basal 20-140 x 50 mm, elliptical, ovate, lanceolate or oblong-lanceolate, obtuse to acuminate, shallowly to deeply dentate, truncate to attenuate at base, petiolate; cauline l-2(-4), like the basal, but with more or less numerous stellate hairs beneath. Capitula (1—)2— 10; peduncles erect, with stellate hairs, dark or dark-based simple eglandular hairs and shorter, dark glandular hairs. Involucre 10-16(-17) x 7-14 mm, dark; bracts linear-lanceolate, obtuse to acute, with numerous dark glandular hairs, sometimes also few to numerous dark or dark-based simple eglandular hairs, and sometimes a few stellate hairs. Ligules with more or less numerous short simple eglandular hairs at apex. Stigmas discoloured. 2/z = 27, 36. N. & C. Europe. Au Br Cz Ga Ge He Is It Ju No Po Rm Rs (N, W) Su.

Included species:

H. atratum Fries , Nova Acta Reg. Soc. Sci. Upsal. 14: 105 (1848). • Alps. Au Ga He It.

H. atrellum (Zahn) Juxip in Schischkin & Bobrov, Fl. URSS 30: 189 (1960). Cz Po Rm Rs (W).

H. ovaliceps Norrlin , Acta Soc. Fauna FI. Fenn. 3(4): 82 (1888). No Rs (N) Su.

H. piciniforme Dahlst. , Ark. Bot. 3(10): 21 (1904). • Is.

H. samnaunicum (Zahn) P. D. Sell & C. West, Bot. Jour. Linn. Soc. 71: 266 (1976) ( H. atratum subsp. samnaunicum Zahn ). • C. & E. Alps. Au He It.

H. schroeteranum (Zahn) P. D. Sell & C. West , loc. cit. (1976) ( H. atratum subsp. schroeteranum Zahn ). • C. & E. Alps. AuHeItJu.

H. sinuans F. J. Hanb. , Jour. Bot. (London) 30: 167 (1892). • Scotland. Br.

H. submurorum Lindeb. in Blytt, Norg. FI. 2: 643 (1874). • Br No Su.

H. subnigrescens (Fries ex Norrlin) Dahlst. , Acta Horti Berg. 2(4): 121 (1894). Cz Ge No Po Rs (W) Su.

H. ussense (Pohle & Zahn) Juxip in Schischkin & Bobrov, FI. URSS 30: 192 (1960). N.E. Russia. Rs (N).