Hieracium austriacum Zahn accepted as Hieracium apricorum Dichtl (original description)
Hieracium baeticum subsp. palomerae Zahn accepted as Hieracium bourgaei subsp. palomerae (Zahn) Greuter (original description)
Hieracium baeticum subsp. pseudobaeticum Zahn accepted as Hieracium aragonense subsp. pseudobaeticum (Zahn) Greuter (original description)
Hieracium baeticum subsp. sastronii Zahn accepted as Hieracium bourgaei subsp. sastronii (Zahn) Greuter (original description)
Hieracium baeticum var. praecocifolioides Zahn accepted as Hieracium loscosianum subsp. praecocifolioides (Zahn) Gottschl. (original description)
Hieracium colmeiroanum subsp. aemuliforme Zahn accepted as Hieracium lanifolium subsp. aemuliforme (Zahn) Greuter (original description)
Hieracium elisaeanum subsp. microsphaerellum Zahn accepted as Hieracium aragonense subsp. microsphaerellum (Zahn) Greuter (original description)
Hieracium elisaeanum subsp. subbellidifolium Zahn accepted as Hieracium texedense Pau (original description)
Hieracium flocculiferum subsp. subflocciferum Zahn accepted as Hieracium subflocciferum (Zahn) Mateo (original description)
Hieracium gastonianum subsp. dulacianum Zahn accepted as Hieracium lamprophyllum subsp. dulacianum (Zahn) Greuter (original description)
Hieracium illyricum subsp. morlonense Zahn accepted as Hieracium calcareum subsp. morlonense (Zahn) Greuter (original description)
Hieracium laniferum subsp. spathulatiforme Zahn accepted as Hieracium spathulatum subsp. spathulatiforme (Zahn) Greuter (original description)
Hieracium lawsonii subsp. aemuliflorum (Sudre) Zahn (original description)
Hieracium morisianum subsp. mollipellis Zahn accepted as Hieracium pilosum subsp. mollipellis (Zahn) Gottschl. (original description)
Hieracium morisianum subsp. monophorum Zahn accepted as Hieracium pilosum subsp. monophorum (Zahn) Greuter (original description)
Hieracium mougeotii subsp. angliciforme Zahn accepted as Hieracium juranum subsp. angliciforme (Zahn) Greuter (original description)
Hieracium mougeotii subsp. asturicum Zahn accepted as Hieracium lamprophyllum subsp. asturicum (Zahn) Greuter (original description)
Hieracium mougeotii subsp. stelliceps Zahn accepted as Hieracium juranum subsp. stelliceps (Zahn) Greuter (original description)
Hieracium norvegicum subsp. tanyphyllum Dahlst. ex Zahn (original description)
Hieracium olivaceum subsp. hedypnoides Zahn accepted as Hieracium juranum subsp. hedypnoides (Zahn) Greuter (original description)
Hieracium olivaceum subsp. nouletii Zahn accepted as Hieracium alatum subsp. nouletii (Zahn) Greuter (original description)
Hieracium olivaceum subsp. oleicoloriforme Zahn accepted as Hieracium juranum subsp. oleicoloriforme (Zahn) Greuter (original description)
Hieracium olivaceum subsp. subolivaceum Zahn accepted as Hieracium alatum subsp. subolivaceum (Zahn) Greuter (original description)
Hieracium pallidum subsp. argaeum Zahn (original description)
Hieracium pallidum subsp. ceratophylloides Zahn (original description)
Hieracium pallidum subsp. creticum Zahn (original description)
Hieracium pallidum subsp. curcicianum Zahn (original description)
Hieracium pallidum subsp. lasiochaetum Bornm. & Zahn (original description)
Hieracium pallidum subsp. subvandasii Bornm. & Zahn (original description)
Hieracium pallidum subsp. tordanum Zahn (original description)
Hieracium pallidum subsp. vranjanum Zahn (original description)
Hieracium phlomoides subsp. phlomoidiforme Zahn accepted as Hieracium hastile subsp. phlomoidiforme (Zahn) Greuter (original description)
Hieracium praecox subsp. chlorotephrinum Zahn (original description)
Hieracium praecox subsp. glauciniforme Zahn (original description)
Hieracium praecox subsp. horripilum Zahn (original description)
Hieracium praecox subsp. leucotephrodes Zahn (original description)
Hieracium praecox subsp. pljackavicense Zahn (original description)
Hieracium praecox subsp. portaeferreae Degen & Zahn (original description)
Hieracium praecox subsp. subpubescens Zahn (original description)
Hieracium praecox subsp. veljunense Zahn (original description)
Hieracium praecox subsp. venulosum Zahn (original description)
Hieracium pseudoboreale (Nägeli & Peter) Zahn accepted as Hieracium borealiforme P.D.Sell & C.West (original description)
Hieracium sonchoides subsp. coriaceum Zahn accepted as Hieracium attractum subsp. coriaceum (Zahn) Greuter (original description)
Hieracium subglaberrimum subsp. draconis Zahn accepted as Hieracium sparsiramum subsp. draconis (Zahn) Gottschl. (original description)
Hieracium subsericeum (Rouy) Zahn accepted as Hieracium cryptanthum subsp. subsericeum (Rouy) Greuter (original description)
Hieracium subsericeum subsp. sericopodum Zahn accepted as Hieracium cryptanthum subsp. sericopodum (Zahn) Greuter (original description)
Hieracium substellatum subsp. simonkaianum Zahn (original description)
Hieracium tephrocerinthe Zahn accepted as Hieracium purpurascens Scheele ex Willk. (original description)
Hieracium tephrocerinthe subsp. lanuzae Zahn accepted as Hieracium cabreranum subsp. lanuzae (Zahn) Greuter (original description)
Hieracium tephrocerinthe subsp. serdanyolae Zahn accepted as Hieracium serdanyolae (Zahn) Mateo (original description)
Hieracium vulgatum subsp. calcogeton Zahn (original description)
Hieracium wiesbaurianum subsp. acutiserratum Zahn (original description)
Hieracium wiesbaurianum subsp. bifidopsis Zahn (original description)
Hieracium wiesbaurianum subsp. crinifrons Zahn (original description)
Hieracium wiesbaurianum subsp. cyanellum Zahn (original description)
Hieracium wiesbaurianum subsp. epirense Zahn (original description)
Hieracium wiesbaurianum subsp. fojnicense Zahn (original description)
Hieracium wiesbaurianum subsp. herculanum Zahn (original description)
Hieracium wiesbaurianum subsp. hypotephraeum Zahn (original description)
Hieracium wiesbaurianum subsp. kyllenense Zahn (original description)
Hieracium wiesbaurianum subsp. lineatoides Zahn (original description)
Hieracium wiesbaurianum subsp. pinnatiscissum Zahn (original description)
Hieracium wiesbaurianum subsp. prasinophyton Zahn (original description)
Hieracium wiesbaurianum subsp. retroversidens Zahn (original description)
Hieracium wiesbaurianum subsp. subcaesiellum Zahn (original description)
Hieracium wiesbaurianum subsp. sublineolatum Zahn (original description)
Hieracium wiesbaurianum subsp. uazzanum Zahn (original description)