Closterium abruptum W.West

Closterium acerosum (Schrank) Ehrenb. ex Ralfs

Closterium aciculare T.West

Closterium acutum Bréb. ex Ralfs

Closterium angustatum Kütz. ex Ralfs

Closterium archerianum Cleve

Closterium arcus Brook & D.B.Will.

Closterium attenuatum Ralfs

Closterium baillyanum (Bréb.) Bréb.

Closterium balmacarense Turner

Closterium calosporum Wittr.

Closterium ceratium Perty

Closterium closterioides (Ralfs) A.Louis & Peeters

Closterium cornu Ehrenb. ex Ralfs

Closterium costatum Corda ex Ralfs

Closterium cynthia De Not.

Closterium decorum Bréb.

Closterium delpontei (G.A.Klebs) Wolle

Closterium dianae Ehrenb. ex Ralfs

Closterium didymotocum Ralfs

Closterium directum W.Archer

Closterium eboracense W.B.Turner

Closterium ehrenbergii Menegh. ex Ralfs

Closterium exiguum W. & G.S.West

Closterium exile W. & G.S.West

Closterium gracile Bréb. ex Ralfs

Closterium idiosporum W. & G.S.West

Closterium incurvum Bréb.

Closterium infractum Messik.

Closterium intermedium Ralfs

Closterium jenneri Ralfs

Closterium juncidum Ralfs

Closterium kuetzingii Bréb.

Closterium lagoense Nordst.

Closterium lanceolatum Kütz. ex Ralfs

Closterium laterale Nordst.

Closterium leibleinii Kütz. ex Ralfs

Closterium leibleinii Kütz.

Closterium limneticum Lemmerm.

Closterium lineatum Ehrenb. ex Ralfs

Closterium littorale Gay

Closterium lundellii Lagerh. = Closterium cornu Ehrenb. ex Ralfs var. lundellii (Lagerh.) Willi Krieg.

Closterium lundellii Lagerh. in W. & G.S.West = Closterium cornu Ehrenb. ex Ralfs var. lundellii (Lagerh.) Willi Krieg.

Closterium lunula (O.F.Müll.) Nitzsch. ex Ralfs

Closterium macilentum Bréb.

Closterium malinvernianum De Not.

Closterium malinvernianum W. & G.S.West = Closterium ehrenbergii Menegh. ex Ralfs var. malinvernianum (De Not.) Brook (Mscr.)

Closterium moniliferum (Bory) Ehrenb. ex Ralfs

Closterium navicula (Bréb.) Lütkem.

Closterium nilssonii Borge = Closterium abruptum W.West var. maijus (Traunst & P.Traunst.) Ruzicka

Closterium nilssonii O.Borge = Closterium abruptum W.West var. abruptum W.West

Closterium nordstedtii Chodat

Closterium parvulum Nägeli

Closterium peracerosum Gay

Closterium porrectum Nordst.

Closterium praelongum Bréb.

Closterium pritchardianum W.Archer

Closterium pronum Bréb.

Closterium pseudodianae Roy = Closterium dianae Ehrenb. ex Ralfs var. pseudodianae (R.Roy) Willi Krieg.

Closterium pseudolumina Borge

Closterium pseudolunula O.Borge

Closterium pusillum Hantzsch in Rabenh.

Closterium ralfsii (Bréb.) ex Bréb.

Closterium regulare Bréb.

Closterium rostratum Ehrenb. ex Ralfs

Closterium scoticum Turner

Closterium setaceum Ehrenb. ex Ralfs

Closterium sigmoideum Lagerh. & Nordst.

Closterium siliqua W. & G.S.West

Closterium strigosum Bréb.

Closterium striolatum Ehrenb. ex Ralfs

Closterium sublaterale Ruzicka

Closterium subscoticum Gutw.

Closterium subulatum (Kütz.) Bréb.

Closterium tortum B.M.Griffiths

Closterium toxon W.West

Closterium tumidulum Gay

Closterium tumidum L.N.Johnson

Closterium turgidum Ehrenb. ex Ralfs

Closterium ulna G.W.Focke ex W.B.Turner = Closterium directum W.Archer var. directum Ruzicka

Closterium venus Kütz. ex Ralfs