Apargia taraxaci Hornem. accepted as Scorzoneroides autumnalis (L.) Moench (original description)
Artemisia groenlandica Wormsk. accepted as Artemisia campestris var. borealis (Pall.) M.Peck (original description)
Artemisia rupestris O.F.Müll. accepted as Artemisia norvegica Fr. (original description)
Carduus acanthoides Hornem. (original description)
Erigeron droebachensis O.Muell. (original description)
Gnaphalium fuscum Oeder accepted as Gnaphalium sylvaticum L. (original description)
Hieracium cymosum O.F.Müll. (original description)
Hieracium sabaudum O.F.Müll. (original description)
Leontodon autumnalis Oeder (original description)
Senecio denticulatus O.F.Müll. accepted as Senecio vulgaris subsp. denticulatus (O.F.Müll.) P.D.Sell (original description)
Taraxacum phymatocarpum J.Vahl (original description)