Carex lurida var. flaccida L.H.Bailey accepted as Carex lurida Wahlenb. (subsequent type designation)
Carex sect. Anomalae (J.Carey) Mack. (new combination reference)
Carex sect. Collinsiae (Mack.) Mack. (new combination reference)
Carex sect. Folliculatae (Mack.) Mack. accepted as Carex sect. Rostrales Meinsh. (new combination reference)
Carex sect. Gracillimae (J.Carey) Mack. accepted as Carex sect. CastaneaClade (new combination reference)
Carex sect. Hispidae Mack. accepted as Carex sect. Hispidae Mack. ex Reznicek accepted as Carex sect. FlaccaClade (original description)
Carex sect. Intermediae Nyman ex Mack. accepted as Carex sect. Holarrhenae (Döll) Pax accepted as Carex sect. DistichaClade (original description)
Carex sect. Longicaules Mack. accepted as Carex sect. Longicaules Mack. ex Reznicek accepted as Carex sect. CastaneaClade (original description)
Carex sect. Longirostres Kük. ex Mack. accepted as Carex sect. Longirostrellae Jim.Mejías & S.Gebauer (original description)
Carex sect. Lupulinae (J.Carey) Mack. accepted as Carex sect. HirtaClade (new combination reference)
Carex sect. Montanae (Fr.) Mack. accepted as Carex sect. Acrocystis Dumort. (new combination reference)
Carex sect. Nardinae (Tuck.) Mack. accepted as Carex sect. Filifoliae (Tuck.) Mack. (new combination reference)
Carex sect. Obtusatae (Tuck.) Mack. accepted as Carex sect. CapitataClade (new combination reference)
Carex sect. Oligocarpae Mack. accepted as Carex sect. Griseae (L.H.Bailey) Kük. (original description)
Carex sect. Pendulinae (Fr.) Mack. accepted as Carex sect. Thuringiacae G.Don accepted as Carex sect. FlaccaClade (new combination reference)
Carex sect. Potosinae Mack. (original description)
Carex sect. Praecoces Christ ex Mack. accepted as Carex sect. Mitratae Kük. (original description)
Carex sect. Shortianae (L.H.Bailey) Mack. (new combination reference)
Carex sect. Squarrosae (J.Carey) Mack. accepted as Carex sect. Shortianae (L.H.Bailey) Mack. (new combination reference)