Hieracium argillaceum

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 : 379

77. H. argillaceum group ( H. lachenalii auct., non C. C. Gmelin). Stems 30-100 cm, with numerous simple eglandular hairs especially below and numerous stellate and numerous glandular hairs above. Leaves with simple eglandular hairs which are sometimes sparse above; basal few to numerous, 25-110 x 10-40 mm, elliptical, ovate or lanceolate, usually acute, denticulate to deeply dentate, mostly cuneate at base; cauline 4-20, the lower like the basal, petiolate, the upper smaller and sessile. Capitula 3-50(-numerous); peduncles with dense stellate and numerous glandular hairs, sometimes with an occasional eglandular hair. Involucre 9-11 x 8-10 mm; bracts acute, with numerous stellate, numerous glandular and sometimes an occasional simple eglandular hair. Stigmas yellow or discoloured. Ligules usually with simple eglandular hairs at apex. 2л = 27. Most of Europe except the Mediterranean region and the southeast. Au Br Bu Co Cz Da Fe Ga Ge He Ho Hs Hu It Ju Lu No Po Rm Rs (N, B, C) Su.

Included species:

H. acuminatum Jordan , Cat. Jard. Grenoble 1849: 17 (1849) ( H. lachenalii auct., non C. C. Gmelin). 2л = 27. Au Be Br Bu Cz Ga Ge He Ho Hs Hu It Ju Lu Po Rm.

H. argillaceum Jordan, loc. cit. (1849). • Au Bu Co Cz Da GaGeHeHoHuItJuPoRm.

H. aspernatum Jordan ex Boreau , FI. Centre Fr. ed. 3, 2: 400 (1857). • Au Be Cz Ga Ge He Ho Hu It Ju Po Rm.

H. chlorophyllum Jordan ex Boreau , op. cit. 399 (1857). • Au Be Co Cz Ge He Ho Hu It Ju Po Rs (B).

H. deductum Sudre , Hier. Centr. Fr. 57 (1902). • Au Ga Ge He Hu It Po.

H. jablonicense Wołoszcsak , Spraw. Кот. Fizyogr. Krakow. 25: 66 (1890). Au Bu CzJuRm Rs (W). (This species shows some characters of H. rotundatum .)