Hieracium x, Boiss.

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 : 375-376

58. H. x macrotrichum Boiss. , Diagn. Pl. Or. Nov. 1(4): 29 (1844)

( H. erythrodontum Zahn ; H. echioides / hoppeanum ).

Variable; some plants are more like one parent than the other. Differs from both parents in its lax or deeply furcate inflorescence of 3—15(—30) capitula. The hairs of the flowering stem are up to 18 mm, longer than those in any other taxon in the subgenus. E. C. Europe and Balkan peninsula. Au Bu Gr Hu Ju?Rm.

H. x hortatschicum Zahn in Engler, Pflanzenreich 82(IV.28O): 1515 (1923) ( H. echioides / hoppeanum / piloselloides ). • N. Greece (near Thessaloniki). Gr.

H. xbudense Borbas , Term.-Tud. Közl. 8: 36 (1876) ( H. echioides / hoppeanum / praealtum ). • Hungary (near Budapest). Hu.

H. x tephroglaucum Naegeli & Peter , Hier. Mittel-Eur. 1: 513 (1885) ( H. echioides / lactucella ). • S. C. Czechoslovakia; C. Romania. Cz Rm.

H. x tephrophyton Oborny & Zahn , Verh. Naturf. Ver. Brünn 43: 77 (1905) ( H. echioidesllactucellalpilosella ). • S. C. Czechoslovakia (near Znojmo). Cz.

H. x occidentale E. I. Nyárády , Acta Fauna FI. Universali (Ser. Bot.) 3: 14 (1940) ( H. echioides!lactucelhflpraealtum ). • W.C. Romania. Rm.