Carex aequialta Kük. (original description)
Carex aestivalis M.A.Curtis ex A.Gray (additional source)
Carex anisostachys Liebm. (additional source)
Carex anisostachys var. chlorocarpos (Liebm.) L.H.Bailey accepted as Carex anisostachys Liebm. (additional source)
Carex anisostachys var. monticola Kük. accepted as Carex anisostachys Liebm. (new combination reference)
Carex appressa var. sectoides Kük. accepted as Carex sectoides (Kük.) Edgar (original description)
Carex aristata subsp. aristata accepted as Carex atherodes Spreng. (additional source)
Carex aristata subsp. trichocarpa Kük. (original description)
Carex aristata var. eriophylla Kük. accepted as Carex raddei Kük. (original description)
Carex balfourii Kük. (original description)
Carex bonariensis f. remota (Kük.) Kük. accepted as Carex bonariensis Desf. ex Poir. (new combination reference)
Carex capillaris var. regeliana Kük. accepted as Carex regeliana (Kük.) Litv. (original description)
Carex cercidascus C.B.Clarke (additional source)
Carex chordalis Liebm. (additional source)
Carex crassiflora Kük. (original description)
Carex crinalis Boott (additional source)
Carex davisii Schwein. & Torr. (additional source)
Carex davisii f. glabrescens Kük. accepted as Carex albicans var. albicans (original description)
Carex digitata subsp. quadriflora Kük. accepted as Carex quadriflora (Kük.) Ohwi (original description)
Carex drymophila var. udensis (Meinsh.) Kük. accepted as Carex drymophila Turcz. ex Steud. (new combination reference)
Carex fecunda Steud. (additional source)
Carex ferruginea var. caudata Kük. accepted as Carex caudata (Kük.) Pereda & Laínz (original description)
Carex formosa Dewey (additional source)
Carex gayana var. schedonautos (Steud.) Kük. accepted as Carex gayana Desv. (new combination reference)
Carex gayana var. taurina (Phil.) Kük. accepted as Carex gayana Desv. (new combination reference)
Carex gracillima Schwein. (additional source)
Carex gynodynama Olney (additional source)
Carex incurva var. melanocystis (É.Desv.) Kük. accepted as Carex melanocystis É.Desv. (new combination reference)
Carex incurva var. misera (Kük.) Kük. accepted as Carex melanocystis É.Desv. (new combination reference)
Carex jamesonii var. chordalis (Liebm.) Kük. accepted as Carex chordalis Liebm. (original description)
Carex kumaonensis Kük. (original description)
Carex lehmanniana var. simplex Kük. accepted as Carex via-aquae Jim.Mejías, Lois, Acedo & Reznicek (original description)
Carex longicaulis Boeckeler (additional source)
Carex longicaulis var. coulteri (Boott ex Hemsl.) Kük. accepted as Carex coulteri Boott ex Hemsl. (new combination reference)
Carex lurida var. parvula (Paine) Kük. accepted as Carex lurida var. parvula (Paine) L.H.Bailey accepted as Carex lurida Wahlenb. (new combination reference)
Carex macrorrhiza var. simplex Kük. accepted as Carex firmicaulis Kalela (original description)
Carex mendocinensis Olney ex Boott (additional source)
Carex mildbraediana Kük. (original description)
Carex mingrelica Kük. (original description)
Carex nebularum f. major (Kük.) Kük. accepted as Carex firmicaulis Kalela (new combination reference)
Carex obscuriceps Kük. (original description)
Carex okuboi Franch. (original description)
Carex oxylepis Torr. & Hook. (additional source)
Carex oxylepis f. glabra Kük. accepted as Carex oxylepis Torr. & Hook. (new combination reference)
Carex paxii Kük. (original description)
Carex prasina Wahlenb. (additional source)
Carex pseudoaperta Boeckeler ex Kük. (original description)
Carex pubescens Muhl. ex Willd. accepted as Carex hirtifolia Mack. (additional source)
Carex pygmaea Boeckeler (additional source)
Carex sclerocarpa Franch. (additional source)
Carex sect. Baldenses Tuck. ex Kük. (original description)
Carex sect. Careyanae Tuck. ex Kük. accepted as Carex sect. Griseae (L.H.Bailey) Kük. (original description)
Carex sect. Echinochlaenae (Holm) Kük. (new combination reference)
Carex sect. Elatae Kük. accepted as Carex sect. Africanae C.B.Clarke (original description)
Carex sect. Fecundae Kük. (original description)
Carex sect. Foetidae (Tuck. ex L.H.Bailey) Kük. (new combination reference)
Carex sect. Gibbae Kük. (original description)
Carex sect. Griseae (L.H.Bailey) Kük. (new combination reference)
Carex sect. Incurvae (Kük.) Kük. accepted as Carex sect. DistichaClade (new combination reference)
Carex sect. Inflatae Kük. accepted as Carex sect. PaucifloraClade (original description)
Carex sect. Inversae Kük. (original description)
Carex sect. Japonicae Kük. accepted as Carex sect. Pacificae Ohwi (original description)
Carex sect. Junciformes (Boeck.) Kük. (new combination reference)
Carex sect. Leucocephalae (Holm) Kük. (new combination reference)
Carex sect. Longespicatae Kük. accepted as Carex sect. CapitataClade (original description)
Carex sect. Macrocephalae Kük. (original description)
Carex sect. Microcephalae (Holm) Kük. accepted as Carex sect. Capituligerae Kük. accepted as Carex sect. CapitataClade (new combination reference)
Carex sect. Mitratae Kük. (original description)
Carex sect. Mundae Kük. (original description)
Carex sect. Pachystylae Kük. accepted as Carex sect. Cheilocystis Dumort. (original description)
Carex sect. Petraeae (O.Lang.) Kük. accepted as Carex sect. CapitataClade (new combination reference)
Carex sect. Pictae Kük. (original description)
Carex sect. Psilocarpae Kük. (original description)
Carex sect. Rhomboidales Kük. (original description)
Carex sect. Scabrellae Kük. (original description)
Carex sect. Schiedeanae Kük. (original description)
Carex sect. Scirpinae (Tuck.) Kük. accepted as Carex sect. Scirpoideae Pax ex Meinsh. (new combination reference)
Carex sect. Scitae (Franch.) Kük. accepted as Carex sect. Phacocystis Dumort. (new combination reference)
Carex sect. Stenorhynchae (Holm) Kük. accepted as Carex sect. AnnectensClade (new combination reference)
Carex sect. Tumidae Kük. accepted as Carex sect. Paludosae G.Don (original description)
Carex sect. Unciniaeformes Kük. accepted as Carex sect. Unciniiformes Kük. accepted as Carex sect. Leucoglochin Dumort. accepted as Carex sect. PaucifloraClade (original description)
Carex sect. Ursinae Kük. accepted as Carex sect. Glareosae G.Don (original description)
Carex sororia f. subdivulsa (Kük.) Kük. accepted as Carex subdivulsa (Kük.) G.A.Wheeler (new combination reference)
Carex sororia var. involucrata Kük. accepted as Carex fossa G.A.Wheeler (replacement name source)
Carex sororia var. pseudobracteosa (Kük.) Kük. accepted as Carex sororia Kunth (new combination reference)
Carex stipata var. laevivaginata Kük. accepted as Carex laevivaginata (Kük.) Mack. (original description)
Carex strigosa Huds. (additional source)
Carex subg. Primocarex Kük. accepted as Carex subg. Psyllophorae (Degland) Peterm. (original description)
Carex subsect. Australes Kük. accepted as Carex sect. Inversae Kük. (original description)
Carex subsect. Cryptocarpae (Tuck. ex L.H.Bailey) Kük. accepted as Carex sect. Phacocystis Dumort. (new combination reference)
Carex subsect. Decorae Kük. accepted as Carex sect. Decorae (Kük.) Ohwi (original description)
Carex subsect. Ferrugineae Tuck. ex Kük. accepted as Carex sect. Ferrugineae Heuff. accepted as Carex sect. FlaccaClade (original description)
Carex subsect. Firmiculmes Kük. accepted as Carex sect. Firmiculmes (Kük.) Mack. (original description)
Carex subsect. Firmiculmes Kük. accepted as Carex sect. Firmiculmes (Kük.) Mack. (subsequent type designation)
Carex subsect. Graciles (Tuck. ex Kük.) Kük. accepted as Carex sect. Graciles Tuck. ex Kük. (new combination reference)
Carex subsect. Longirostres Kük. accepted as Carex sect. Longirostrellae Jim.Mejías & S.Gebauer (original description)
Carex subsect. Praelongae Kük. accepted as Carex sect. Cernuae C.B.Clarke (original description)
Carex subsect. Radicales Kük. accepted as Carex sect. Radicales (Kük.) Nelmes (original description)
Carex subsect. Seticulmes Kük. accepted as Carex sect. Seticulmes (Kük.) Jim.Mejías & García-Moro (original description)
Carex tatsiensis (Franch.) Kük. (new combination reference)

Holotype B B100166187, geounit Rwanda, identified as Carex mildbraediana Kük.

 Diagnosis

 for Carex aristata var. eriophylla Kük.

Culmus firmior. Folia latiora subtus cum vaginis hirto-pilosa. Spiculae ♀️ 3 cm longae. [Stem stronger. ... [details]

 Diagnosis

 for Carex obscuriceps Kük.

Culmus 20–45 cm altus rigidus obsolete triqueter laevis. Folia culmo breviora longiorave 3–5 mm lata basi ... [details]

 Diagnosis

 for Carex wallichiana f. glabrescens Kük.

Utriculi parce pilosi. [Utricles sparsely hairy.] [details]

 New combination

 for Carex lurida var. parvula (Paine) Kük.

Fernald, l. c. [locus citandi] 56. -- Culmus 15-30 cm altus. Spiculae foeminei subgloboso-ovatae 1 cm longae ... [details]

 Type designation

 for Carex aristata var. eriophylla Kük.

Korea: Sandige Gräben bei Tschinampo (Faurie N. 944!) [details]

 Type designation

 for Carex wallichiana f. glabrescens Kük.

Korea: Söul, längs der Eisenbahn (Faurie n. 948!), Kan-ouen-to (Faurie n. 947!). [Korea: Seoul, along the ... [details]