Hieracium vulgatum f. denticulatum Zahn in Schack (1930: 30).

Ind. loc.: “Berka: Herrensprung am Rosenberg (20.7.1920 B.)”

Holotype:— GERMANY. Thuringia: Herrensprung (am Rosenberg), Fl v. Weimar, 20 July 1920, J. Bornmüller (B barcode B 10 0420873!).—Current name: Hieracium lachenalii subsp. argillaceum (Jordan 1849: 17) Zahn (1929b: 1280).

Remarks: —Only one plant and above all infested by a gall wasp. The forma therefore without taxonomic value. Zahn himself did not mention this taxon in his account for Ascherson & Graebner´s “Synopsis der mitteleuropäischen Flora, Vol. 12” (Ascherson & Graebner 1922–38).