Carex bonariensis var. achalensis Kurtz ex Kük. accepted as Carex feddeana H.Pfeiff. (original description)
Carex bonariensis var. glabrescens Kurtz ex Kük. accepted as Carex pedicularis Jim.Mejías & Naczi (original description)
Carex bonariensis var. remota Kük. accepted as Carex bonariensis Desf. ex Poir. (original description)
Carex bonariensis var. trachycystis (Griseb.) Kük. accepted as Carex bonariensis Desf. ex Poir. (new combination reference)
Carex caduca var. ortegae (Phil.) Kük. accepted as Carex caduca Boott (new combination reference)
Carex flava subsp. brevirostrata Kük. accepted as Carex sagei Phil. (original description)
Carex gayana var. densa Kük. accepted as Carex gayana É.Desv. (original description)
Carex gayana var. rufa Kük. accepted as Carex gayana É.Desv. (replacement name source)
Carex involucrata var. angustata Kük. accepted as Carex uruguensis Boeckeler (original description)
Carex involucrata var. pseudobracteosa Kük. accepted as Carex sororia Kunth (original description)
Carex involucrata var. subdivulsa Kük. accepted as Carex subdivulsa (Kük.) G.A.Wheeler (original description)
Carex involucrata var. submuricata C.B.Clarke ex Kük. accepted as Carex sororia Kunth (original description)
Carex latibracteolata Kük. accepted as Carex catamarcensis C.B.Clarke ex Kük. (original description)
Carex melanocystis var. misera Kük. accepted as Carex melanocystis É.Desv. (replacement name source)
Carex microglochin subsp. fuegina Kük. accepted as Carex camptoglochin V.I.Krecz. (replacement name source)
Carex pycnostachya var. major Kük. accepted as Carex firmicaulis Kalela (original description)
Carex reichei Kük. (original description)
Carex sect. Alatae Kük. accepted as Carex sect. Argyroglochin Dumort. (original description)
Carex sect. Bifurcatae Kük. accepted as Carex sect. Pseudocypereae Heuff. accepted as Carex sect. HirtaClade (original description)
Carex sect. Capituligerae Kük. accepted as Carex sect. CapitataClade (original description)
Carex sect. Graciles Tuck. ex Kük. (original description)
Carex sect. Melananthae (Drejer) Kük. accepted as Carex sect. Racemosae G.Don (new combination reference)
Carex sect. Microcarpae Kük. accepted as Carex sect. Rhynchocystis Dumort. (original description)
Carex sect. Polystachyae (Tuck. ex L.H.Bailey) Kük. (new combination reference)
Carex sellowiana var. subrepens Kük. accepted as Carex sellowiana Schltdl. (original description)
Carex subg. Vigneastra (Tuck) Kük. accepted as Carex subg. Carex (new combination reference)
Carex subsect. Aciculares Kük. accepted as Carex sect. Junciformes (Boeck.) Kük. (original description)
Carex subsect. Incurvae Kük. accepted as Carex sect. Incurvae (Kük.) Kük. accepted as Carex sect. DistichaClade (original description)
Carex subsect. Multiflorae (J. Carey) Kük. accepted as Carex sect. Multiflorae (J.Carey) Asch. & Graebn. accepted as Carex sect. AnnectensClade (basis of record)
Carex uruguensis var. pseudoechinata (Boeckeler) Kük. accepted as Carex uruguensis Boeckeler (new combination reference)