Hieracium auratum subsp. schroeterianum Zahn accepted as Hieracium dolichaetum Zahn (original description)
Hieracium bauhini subsp. magyoricum (Peter) Zahn accepted as Pilosella piloselloides subsp. magyarica (Peter) S.Bräut. & Greuter (original description)
Hieracium bifidum subsp. incisifolium Zahn accepted as Hieracium bifidum subsp. sinuosifrons (Dahlst.) Zahn (original description)
Hieracium bocconei subsp. brachypogon (Zahn) Zahn accepted as Hieracium tephrosoma subsp. brachypogon (Zahn) Zahn (original description)
Hieracium bocconei subsp. imhofii Zahn (original description)
Hieracium bocconei subsp. ramiparum Zahn (original description)
Hieracium canum subsp. caniforme Zahn accepted as Pilosella kalksburgensis (Wiesb.) Soják (original description)
Hieracium cochlearifolium subsp. pseudoglanduliferum Zahn accepted as Hieracium pseudalpinum subsp. pseudoglanduliferum (Zahn) Greuter (original description)
Hieracium cochlearifolium subsp. tissierei Zahn accepted as Hieracium pseudalpinum subsp. tissierei (Zahn) Greuter (original description)
Hieracium dollineri subsp. hyoseriophyllum Zahn (original description)
Hieracium florentinum subsp. genevense Zahn accepted as Pilosella piloselloides subsp. praealta (Gochnat) S.Bräut. & Greuter (original description)
Hieracium glaciale subsp. subcanofloccosum Zahn accepted as Pilosella glacialis F.W.Schultz & Sch.Bip. (original description)
Hieracium laevigatum subsp. boreanum (Boreau) Zahn (original description)
Hieracium laevigatum subsp. friesii (Hartm.) Zahn accepted as Hieracium sabaudum subsp. boreale (Fr.) Hayek (original description)
Hieracium laevigatum subsp. gothiciforme (Dahlst.) Zahn (original description)
Hieracium laevigatum subsp. lineatum (Dahlst.) Zahn (original description)
Hieracium laevigatum subsp. perangustum (Dahlst.) Zahn (original description)
Hieracium macilentum subsp. macilentiforme (Murr & Zahn) Zahn accepted as Hieracium froelichianum subsp. macilentiforme (Murr & Zahn) Gottschl. & Greuter (original description)
Hieracium nigrescens subsp. valpiorae (Zahn) Zahn (original description)
Hieracium pachylodes subsp. floccivelatum Zahn accepted as Pilosella longisquama (Peter) Holub (original description)
Hieracium pallidiflorum subsp. subpicroides Zahn accepted as Schlagintweitia huteri subsp. subpicroides (Zahn) Gottschl. & Greuter (original description)
Hieracium picroides subsp. christii (Arv.-Touv.) Zahn (original description)
Hieracium picroides subsp. intermixtum (Zahn) Zahn (original description)
Hieracium picroides subsp. ochroleucum (W.D.J.Koch) Zahn (original description)
Hieracium picroides subsp. sieberi (Tausch) Zahn accepted as Hieracium picroides subsp. lutescens (Zahn) Greuter (original description)
Hieracium pictum subsp. farinulentum (Jord.) Zahn (original description)
Hieracium prenanthoides subsp. bupleurifolioides Zahn (original description)
Hieracium prenanthoides subsp. cinereiceps (Zahn) Zahn (original description)
Hieracium prenanthoides subsp. golliense Zahn accepted as Hieracium prenanthoides subsp. cinereiceps (Zahn) Zahn (original description)
Hieracium psammogenes subsp. laceridens (Zahn) Zahn accepted as Hieracium bifidum subsp. laceridens (Zahn) Zahn (original description)
Hieracium psammogenes subsp. megalotomum Zahn accepted as Hieracium bifidum subsp. megalotomum (Zahn) Zahn (original description)
Hieracium psammogenes subsp. oreites (Arv.-Touv.) Zahn accepted as Hieracium bifidum subsp. oreites (Arv.-Touv.) Zahn (original description)
Hieracium psammogenes subsp. senile (Arv.-Touv.) Zahn accepted as Hieracium bifidum subsp. senile (Arv.-Touv.) Zahn (original description)
Hieracium pulchellum subsp. morthieri Zahn (original description)
Hieracium ramosissimum subsp. conringiifolium (Arv.-Touv.) Zahn (original description)
Hieracium sabaudum subsp. concinnum (Jord.) Zahn (original description)
Hieracium sabaudum subsp. curvidens (Jord.) Zahn (original description)
Hieracium sabaudum subsp. dumosum (Jord.) Zahn (original description)
Hieracium sabaudum subsp. nemorivagum (Boreau) Zahn (original description)
Hieracium sabaudum subsp. scabiosum (Sudre) Zahn (original description)
Hieracium saxifragum subsp. lithogenes Zahn accepted as Hieracium saxifragum subsp. vulpii Zahn (original description)
Hieracium stoloniflorum subsp. reidigense Zahn accepted as Pilosella stoloniflora (Waldst. & Kit.) F.W.Schultz & Sch.Bip. (original description)
Hieracium ustulatum subsp. nigritellum (Arv.-Touv.) Zahn accepted as Hieracium armerioides subsp. nigritellum (Arv.-Touv.) Zahn (original description)
Hieracium ustulatum subsp. rhombophyllum (Nägeli & Peter) Zahn accepted as Hieracium armerioides subsp. rhombophyllum (Nägeli & Peter) Zahn (original description)
Hieracium vulgatum subsp. alpestre (R.Uechtr.) Zahn accepted as Hieracium lachenalii subsp. alpestre (R.Uechtr.) Greuter (original description)
Hieracium vulgatum subsp. jaccardii (Zahn) Zahn accepted as Hieracium lachenalii subsp. deductum (Sudre) Greuter (original description)