Hieracium argyrotrichum Freyn accepted as Hieracium olympicum subsp. argyrotrichum (Freyn) Zahn (original description)
Hieracium bulgaricum Freyn accepted as Hieracium heldreichii subsp. bulgaricum (Freyn) Zahn (original description)
Hieracium odontotrichum Freyn accepted as Hieracium schmidtii subsp. odontotrichum (Freyn) Greuter (original description)
Hieracium secundum Freyn accepted as Hieracium sparsum subsp. secundum (Freyn) Zahn (original description)
Hieracium subvillosum Freyn accepted as Hieracium sparsum subsp. subvillosum (Freyn) Greuter (original description)
Hieracium vandasii Freyn accepted as Hieracium lazistanum subsp. vandasii (Freyn) S.Bräut. (original description)
Hieracium velenovskyi Freyn accepted as Hieracium djimilense subsp. velenovskyi (Freyn) Zahn (original description)