| Cyperus americanus Garsault [Invalid] | Synonym |  | WCSP | 
	
		| Eleogiton duvalii Fourr. | Synonym |  | WCSP | 
	
		| Heleogiton glaucum Rchb. | Synonym |  | WCSP | 
	
		| Hymenochaeta makinoi Nakai | Synonym |  | WCSP | 
	
		| Schoenoplectus lacustris f. compactus (Beckh.) Soó | Synonym |  | WCSP | 
	
		| Schoenoplectus lacustris f. confertus (Schur) Soó | Synonym |  | WCSP | 
	
		| Schoenoplectus lacustris f. conglomeratus (Junge) Soó | Synonym |  | WCSP | 
	
		| Schoenoplectus lacustris subsp. flevensis (D.Bakker) Á.Löve & D.Löve | Synonym |  | WCSP | 
	
		| Schoenoplectus lacustris f. foliosus (Des Moul.) Soó | Synonym |  | WCSP | 
	
		| Schoenoplectus lacustris f. laxiflorus (Kuntze) Soó | Synonym |  | WCSP | 
	
		| Schoenoplectus lacustris f. minor (Baumg.) Soó | Synonym |  | WCSP | 
	
		| Schoenoplectus lacustris f. radiatus (Vollm.) Soó | Synonym |  | WCSP | 
	
		| Schoenus lacustris (L.) Bernh. | Synonym |  | WCSP | 
	
		| Scirpus altissimus Gilib. [Invalid] | Synonym |  | WCSP | 
	
		| Scirpus andrzejowscii Besser ex Schult. | Synonym |  | WCSP | 
	
		| Scirpus barbatulus Kunth | Synonym |  | WCSP | 
	
		| Scirpus barbulatus Kunth | Synonym |  | WCSP | 
	
		| Scirpus brayi Hoppe ex Roem. & Schult. | Synonym |  | WCSP | 
	
		| Scirpus ciliatus Steud. | Synonym |  | WCSP | 
	
		| Scirpus custoris Hegetschw | Synonym |  | WCSP | 
	
		| Scirpus drepanensis Lojac. | Synonym |  | WCSP | 
	
		| Scirpus holoschoenus Oeder | Synonym |  | WCSP | 
	
		| Scirpus janii Besser ex Schult. | Synonym |  | WCSP | 
	
		| Scirpus jardinei Steud. & Jard. | Synonym |  | WCSP | 
	
		| Scirpus lacustris var. carinatus Nakai | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. compactus Beckh. | Synonym |  | WCSP | 
	
		| Scirpus lacustris var. condensatus Peck | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. confertus Schur | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. conglomeratus Junge | Synonym |  | WCSP | 
	
		| Scirpus lacustris var. custoris (Hegetschw) Nyman | Synonym |  | WCSP | 
	
		| Scirpus lacustris subsp. flevensis D.Bakker | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. foliosus Des Moul. | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. laxiflorus Kuntze | Synonym |  | WCSP | 
	
		| Scirpus lacustris var. medius Schrad. ex Lej. | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. minor Baumg. | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. palustris Schltdl. | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. radiatus Vollm. | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. sparganiifolius Volobaev | Synonym |  | WCSP | 
	
		| Scirpus lacustris f. terrestris Glück | Synonym |  | WCSP | 
	
		| Scirpus lithuanicus Besser ex Schult. | Synonym |  | WCSP | 
	
		| Scirpus macrophyllus Besser ex Schult. | Synonym |  | WCSP | 
	
		| Scirpus medius Gray | Synonym |  | WCSP | 
	
		| Scirpus meyenii Nees | Synonym |  | WCSP | 
	
		| Scirpus orgyalis Raf. | Synonym |  | WCSP | 
	
		| Scirpus pungens Willd. ex Kunth [Illegitimate] | Synonym |  | WCSP | 
	
		| Scirpus trigonus Nolte | Synonym |  | WCSP | 
	
		| Scirpus turgidus Thuill. | Synonym |  | WCSP | 
	
		| Scirpus validus var. condensatus (Peck) Beetle | Synonym |  | WCSP | 
	
		| Scirpus validus f. dutillyanus Lepage | Synonym |  | WCSP | 
	
		| Scirpus validus f. megastachyus Fernald | Synonym |  | WCSP | 
	
		| Scirpus wolfgangii Besser ex Schult. | Synonym |  | WCSP |