Taraxacum nigricans

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 : 337

19. T. nigricans group. Leaves 8-15 cm, lobed, bright to pale medium green, erect, sparsely hairy or glabrescent; lobes variable, few, acute, often dentate with acuminate teeth; petiole often green, long, winged, sometimes with long, narrow teeth. Scapes 8-18 cm, rather slender, sparsely hairy to subglabrous, usually exceeding the leaves. Capitulum 25-35 mm in diameter. Involucre 10-15 x 8-14 mm, dark, often more or less violet-purple, pruinose; outer bracts lanceolate, dark, without a pale margin, patent to erect, ecorniculate. Ligules narrow, dark yellow to orange-yellow, with a grey or purple stripe. Achenes straw-coloured, more rarely reddish; body 3-5-4-5 mm, narrow, shortly spinulose; cone 0-6-1 mm, subcylindrical; beak 6-9 mm, slender. • Alps', Carpathians', mountains of Bulgaria. Au Bu Cz Ga Ge He It Ju Po Rm Rs (W).

32 species have been described for Europe, mainly from the Alps. The following have a relatively wide distribution:

T. aestivum Van Soest , Acta Bot. Neerl. 8: 117 (1959). 2« = 32. AuHeIt.

T. cordatifolium Van Soest , Veröff. Geobot. Inst. Riibel (Zurich) 42: 119 (1969). Au He It.

T. nigricans (Kit.) Reichenb. , FI. Germ. Excurs. 270 (1813). 2л = 24, 32. Bu Cz Po Rs (W).

T. perfissum Van Soest , Acta Bot. Neerl. 8: 129 (1959). Au G" HeIt.

T. reophilum Van Soest , op. cit. 132 (1959). Au He It.

T. rhaeticum Van Soest , op. cit. 134 (1959). 2л = 24. Ga Ge He ItJu.

T. rufocarpum Van Soest , op. cit. 124 (1959). Au Ga He It Ju.