Achillea argyrophylla Halácsy & Georgiev ex Halácsy (original description)
Achillea intermedia Freyn accepted as Achillea arabica (original description)
Carduus phyllolepis Willk. accepted as Carduus nutans L. (original description)
Centaurea gheorghieffii Halácsy accepted as Centaurea kerneriana subsp. gheorghieffii (Halácsy) Dostál (original description)
Centaurea ludovici Borbás (original description)
Echinops heterocephalus Freyn (original description)
Hieracium aureo-purpureum Freyn (original description)
Hieracium baldaccii Halácsy (original description)
Hieracium bornmuelleri Freyn accepted as Hieracium pannosum subsp. bornmuelleri (Freyn) Murr & Zahn (original description)
Hieracium cappadocicum Freyn accepted as Hieracium chalcidicum subsp. cappadocicum (Freyn) Greuter (original description)
Hieracium congestum Freyn (original description)
Hieracium galaticum Freyn (original description)
Hieracium sublaeve Freyn & Bornm. ex Freyn (original description)