Hieracium armerioides subsp. ustulatum (Arv.-Touv.) Zahn (original description)
Hieracium auriculiforme subsp. brachypodum (Nägeli & Peter) Zahn accepted as Pilosella auriculiformis (Fr.) F.W.Schultz & Sch.Bip. (original description)
Hieracium auriculiforme subsp. xystolepium (Nägeli & Peter) Zahn accepted as Pilosella auriculiformis (Fr.) F.W.Schultz & Sch.Bip. (original description)
Hieracium bocconei subsp. devexicola Zahn (original description)
Hieracium bocconei subsp. simia (Zahn) Zahn accepted as Hieracium simia (Zahn) Prain (original description)
Hieracium bupleuroides subsp. breviflorum (Nägeli & Peter) Zahn (original description)
Hieracium cydoniifolium var. epileion Zahn accepted as Hieracium cydoniifolium subsp. epileion (Zahn) Zahn (original description)
Hieracium cydoniifolium var. subpanduratum Zahn accepted as Hieracium cydoniifolium subsp. subpanduratum (Zahn) Zahn (original description)
Hieracium dentatum subsp. callianthoides (Arv.-Touv. & Briq.) Zahn (original description)
Hieracium dentatum subsp. vaudense (Arv.-Touv.) Zahn (original description)
Hieracium humile subsp. lacerum (Fr.) Zahn (original description)
Hieracium laevigatum subsp. echinodermum Zahn (original description)
Hieracium laevigatum subsp. firmum (Jord.) Zahn accepted as Hieracium laevigatum Willd. (original description)
Hieracium laevigatum subsp. lancidens Zahn accepted as Hieracium laevigatum subsp. grandidens Zahn (original description)
Hieracium laevigatum subsp. retardatum Zahn (original description)
Hieracium longifolium subsp. wahlenbergianum Zahn (original description)
Hieracium nigrescens subsp. leontodontoides (Arv.-Touv. & Briq.) Zahn (original description)
Hieracium nigrescens subsp. subpumilum (Zahn) Zahn (original description)
Hieracium nigrescens subsp. subrhaeticum (Zahn) Zahn (original description)
Hieracium ochroleucum subsp. grimsulanum Zahn accepted as Hieracium picroides subsp. grimsulanum (Zahn) Zahn (original description)
Hieracium ochroleucum subsp. intermixtum Zahn accepted as Hieracium picroides subsp. intermixtum (Zahn) Zahn (original description)
Hieracium pictum var. inclinatiforme Zahn accepted as Hieracium pictum subsp. inclinatiforme (Zahn) Zahn (original description)
Hieracium prenanthoides subsp. jaquetianum (Zahn) Zahn (original description)
Hieracium prenanthoides subsp. strictissimum (Froel.) Zahn (original description)
Hieracium rubellum subsp. fuscescens (Nägeli & Peter) Zahn accepted as Pilosella plaicensis (Woł.) Soják (original description)
Hieracium sabaudum subsp. eminens (Sudre) Zahn (original description)
Hieracium sabaudum subsp. obliquum (Jord.) Zahn (original description)
Hieracium sabaudum subsp. quercetorum (Boreau) Zahn (original description)
Hieracium sabaudum subsp. roffavieri (Sudre) Zahn (original description)
Hieracium sabaudum subsp. vagum Zahn (original description)
Hieracium sabaudum subsp. virgultorum (Jord.) Zahn (original description)
Hieracium scorzonerifolium subsp. pseudopantotrichum Zahn accepted as Hieracium scorzonerifolium subsp. pantotrichum Nägeli & Peter (original description)
Hieracium scorzonerifolium subsp. pseudopantotrichum Zahn accepted as Hieracium scorzonerifolium subsp. pantotrichum Nägeli & Peter (original description)
Hieracium substoloniflorum subsp. chloromelanum (Peter) Zahn accepted as Pilosella substoloniflora (Peter) Soják (original description)
Hieracium valdepilosum subsp. christeneri (Nägeli & Peter) Zahn (original description)
Hieracium vulgatum subsp. acuminatum (Jord.) Zahn accepted as Hieracium lachenalii subsp. acuminatum (Jord.) Zahn (original description)
Hieracium vulgatum subsp. arrectariicaule (Sudre) Zahn accepted as Hieracium maculatum subsp. arrectariicaule (Sudre) Greuter (original description)
Hieracium vulgatum subsp. festinum (Boreau) Zahn accepted as Hieracium lachenalii subsp. festinum (Boreau) Zahn (original description)
Hieracium vulgatum subsp. frondosiforme Zahn accepted as Hieracium lachenalii subsp. frondosiforme (Zahn) Zahn (original description)