Hieracium nigrescens

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 : 392

159 H. nigrescens group ( H. alpinum / murorurn ). Like 158 but leaves 20-110 x 10-40 mm; stems more often with more than 1 capitulum; ligules often with simple eglandular hairs only at apex; stigmas often discoloured. 2n = 36. 800-3000 m. N. & C. Europe. Au Br Cz Fe Ga Ge He Is It No Po Rm Rs (N, W) Su. Included species:

H. adspersum (Norrlin) Elfstr. , Hier. Alpina 16 (1893). • No Rs (N) Su.

H. calenduliflorum Backh., Monogr. Brit. Hier. 23 (1856). 2л = 36. • Scotland. Br.

H. decipiens Tausch , Flora (Regensb.) 20 (Ergänz. 1): 66 (1837). • Au Cz Ge Po Rm Rs (W).

H. frondiferum(Elfstr.)Elfstr., Hier.Alpina2\ (1893).NoRs(N) Su.

H. hanburyi Pugsley, Jour. Bot. (London) 79: 178 (1941). 2/z = 36. • Scotland. Br.

H. neorepandum P. D. Sell & C. West, Bot. Jour. Linn. Soc. 71: 265 (1976) ( H. repandum Dahlst. , non Schrank). • Is.

H. nigrescens Willd. , Sp. Pl. 3: 1574 (1803). • Au Cz Po Rm Rs (W).

H. praematurum Elfstr., Hier. Alpina 24 (1893). • No Su.

H. pseudorhaeticum (Zahn) P. D. Sell & C. West, Bot. Jour. Linn. Soc. 71: 266 (1976) ( H. nigrescens subsp. pseudorhaeticum Zahn ). • S. & S.W. Alps. Ga He It.

H. rhaeticum Fries, Uppsala Univ. Ârsskr. 1862 (Math. Nat., Epier. Hier.)'. 46 (1862). • S. W. & C. Alps. Ga He.

H. subpumilum (Zahn) P. D. Sell & C. West , Bot. Jour. Linn. Soc. 71: 267 (1976) ( H. nigrescens subsp. subpumilum Zahn ). • Alps. Au Ge He It.