Hieracium murorum subsp. koserovense Zahn in Ascherson & Graebner, Syn. Mitteleur. Fl. 12(2): 398. 1931. – Ind. loc.: “Koserow – Kölpinsee (Tessendorff)”.

– Holotype: [Germany]: Usedom: Koserow – Kölpinsee (II.), 3 Jul 1921, F. Tessendorff (B [B 10 0673426]) [Fig. 2]. – Current name: Hieracium murorum subsp. koserovense Zahn.

Remarks — The original label bears the handwritten determination particulars of K. H. Zahn stating “ H. murorum subsp. oblongum var. koserovense ” and “Tessend. et Zahn” as authors of the new name.