Hieracium irriguum subsp. bathylepium Dahlst. accepted as Hieracium lachenalii subsp. bathylepium (Dahlst.) Zahn (original description)
Hieracium irriguum var. haematophyllum Dahlst. accepted as Hieracium levicaule subsp. erubescens (Boreau) Greuter (original description)
Hieracium lepidotum subsp. caligatum Dahlst. accepted as Hieracium lepidotum Dahlst. (original description)
Hieracium porrigens subsp. opacum Dahlst. accepted as Hieracium opacum (Dahlst.) Johanss. (original description)
Hieracium porrigens subsp. reclinatum Dahlst. accepted as Hieracium subsimile Norrl. (original description)
Hieracium porrigens subsp. virenticeps Dahlst. accepted as Hieracium caesium subsp. virenticeps (Dahlst.) Zahn (original description)
Hieracium rigidum subsp. acrifolium Dahlst. accepted as Hieracium laevigatum subsp. acrifolium (Dahlst.) Zahn (original description)
Hieracium rigidum subsp. obatrescens Dahlst. accepted as Hieracium obatrescens (Dahlst.) Dahlst. (original description)