| Cyperus rotundus L. | Accepted |  | WCSP | 
	
		| Cyperus rotundus var. acutus Boeckeler | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. amaliae C.B.Clarke | Synonym |  | WCSP | 
	
		| Cyperus rotundus subsp. brevibracteatus (Legrand) M.Laínz | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. carinalis Benth. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. carinatus F.M.Bailey [Spelling variant] | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. centiflorus C.B.Clarke | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. comosus (Sm.) Nyman | Synonym |  | WCSP | 
	
		| Cyperus rotundus f. comosus (Sm.) Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus subsp. comosus (Sm.) K.Richt. | Synonym |  | WCSP | 
	
		| Cyperus rotundus f. contractus Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus f. depallescens Ekman & Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. disruptus (C.B.Clarke) Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. elongatus Boeckeler | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. fenzelianus (Steud.) El-Hadidy | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. hydra (Michx.) A.Gray | Synonym |  | WCSP | 
	
		| Cyperus rotundus f. inconspicuus (Nyman) Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. inconspicuus Nyman | Synonym |  | WCSP | 
	
		| Cyperus rotundus subsp. inconspicuus (Nyman) K.Richt. | Synonym |  | WCSP | 
	
		| Cyperus rotundus f. latifolius Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus f. latimarginatus Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. macrostachyus Boiss. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. major Parl. | Synonym |  | WCSP | 
	
		| Cyperus rotundus subsp. merkeri (C.B.Clarke) Kük. | Accepted |  | WCSP | 
	
		| Cyperus rotundus var. nubicus (C.B.Clarke) Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. pallidus Benth. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. pendulus Nees | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. platystachys Bojer ex C.B.Clarke | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. procerula C.B.Clarke | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. pseudotuberosus Cherm. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. quimoyensis L.K.Dai | Synonym |  | WCSP | 
	
		| Cyperus rotundus subsp. retzii Kük. | Accepted |  | WCSP | 
	
		| Cyperus rotundus subsp. rotundus | Accepted |  | WCSP | 
	
		| Cyperus rotundus var. salsolus C.B.Clarke | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. spadiceus Boeckeler | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. subcapitatus (C.B.Clarke) Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus var. taylorii (C.B.Clarke) Kük. | Synonym |  | WCSP | 
	
		| Cyperus rotundus subsp. tuberosus (Rottb.) Kük. | Synonym |  | WCSP |