Hieracium biharianum Prodan & Zahn accepted as Hieracium calcogeton (Zahn) Greuter (original description)
Hieracium chaetocaesioides Zahn (original description)
Hieracium corsentinum Zahn accepted as Hieracium glaucinum subsp. glaucinum Jord. (original description)
Hieracium gandogeri (Zahn) Zahn accepted as Hieracium caucasiense subsp. gandogeri (Zahn) Greuter (original description)
Hieracium jubaticeps Behr & Zahn (original description)
Hieracium leucotrichothyrsum Hruby & Zahn (original description)
Hieracium macrodontoides (Zahn) Zahn (original description)
Hieracium mariae-bornmuelleriae Zahn (original description)
Hieracium pseudolympicum Rech.f. & Zahn (original description)
Hieracium pseudopikujense Zahn (original description)
Hieracium pseudovagneri Zahn (original description)
Hieracium rechingeriorum Zahn (original description)
Hieracium revucanum Nyár. & Zahn accepted as Hieracium rohacsense Kit. ex Kit. (original description)
Hieracium stepanoffii Zahn (original description)
Hieracium xanthoprasinophyes Zahn (original description)