| Nominal Species (n = 74) | Present allocation (n = 74) | Ref. |
|---|---|---|
| Closterium abruptum West | Closterium abruptum | 80701 |
| Closterium aciculare T. West | Closterium aciculare | 80701 |
| Closterium anguineum D.B. Williamson | Closterium anguineum | 80701 |
| Closterium angustatum Kützing ex Ralfs | Closterium angustatum | 80701 |
| Closterium angustatum var. angustatum Croasdale | Closterium angustatum var. angustatum | 80701 |
| Closterium archerianum Cleve | Closterium archerianum | 80701 |
| Closterium arcus Brook & D.B. Williamson | Closterium arcus | 80701 |
| Closterium attenuatum Ralfs | Closterium attenuatum | 80701 |
| Closterium baillyanum Brébisson | Closterium baillyanum | 80701 |
| Closterium balmacarense W.B.Turner | Closterium balmacarense | 80701 |
| Closterium braunii Reinsch | Closterium braunii | 80701 |
| Closterium calosporum Wittrock | Closterium calosporum | 80701 |
| Closterium calosporum var. calosporum Borgesen | Closterium calosporum var. calosporum | 80701 |
| Closterium cancer Playfair | Closterium cancer | 80701 |
| Closterium ceratium Perty | Closterium ceratium | 80701 |
| Closterium closteroides var. closteroides Brébisson | Closterium closteroides var. closteroides | 80701 |
| Closterium cornu Ehrenberg | Closterium cornu | 80701 |
| Closterium costatum Corda | Closterium costatum | 80701 |
| Closterium decorum Brébisson | Closterium decorum | 80701 |
| Closterium delpontei var. delpontei W. West & G.S. West | Closterium delpontei var. delpontei | 80701 |
| Closterium directum W. Archer | Closterium directum | 80701 |
| Closterium eboracense W.B.Turner | Closterium eboracense | 80701 |
| Closterium exiguum W. West & G.S. West | Closterium exiguum | 80701 |
| Closterium exile W. West & G.S. West | Closterium exile | 80701 |
| Closterium idiosporum W. West & G.S. West | Closterium idiosporum | 80701 |
| Closterium incurvum Brébisson | Closterium incurvum | 80701 |
| Closterium incurvum var. incurvum Wittrock | Closterium incurvum var. incurvum | 80701 |
| Closterium infractum Messikommer | Closterium infractum | 80701 |
| Closterium intermedium var. intermedium W. West & G.S. West | Closterium intermedium var. intermedium | 80701 |
| Closterium jenneri Ralfs | Closterium jenneri | 80701 |
| Closterium juncidum Ralfs | Closterium juncidum | 80701 |
| Closterium lagoense Nordstedt | Closterium lagoense | 80701 |
| Closterium lagoense var. lagoense W. West & G.S. West | Closterium lagoense var. lagoense | 80701 |
| Closterium laterale Wittrock | Closterium laterale | 80701 |
| Closterium libellula var. libellula A,M. Scott & Prescott | Closterium libellula var. libellula | 80701 |
| Closterium limneticum Lemmermann | Closterium limneticum | 80701 |
| Closterium limneticum var. limneticum Lemmerm | Closterium limneticum var. limneticum | 80701 |
| Closterium littorale F.Gay | Closterium littorale | 80701 |
| Closterium littorale var. littorale W. West & G.S. West | Closterium littorale var. littorale | 80701 |
| Closterium lunula Nitzsch ex Ralfs | Closterium lunula | 80701 |
| Closterium magnificum Playfair | Closterium magnificum | 80701 |
| Closterium malinvernianiforme Grönblad | Closterium malinvernianiforme | 80701 |
| Closterium molle Playfair | Closterium molle | 80701 |
| Closterium naviculoideum Playfair | Closterium naviculoideum | 80701 |
| Closterium nordstedtii Chodat | Closterium nordstedtii | 80701 |
| Closterium peracerosum F. Gay | Closterium peracerosum | 80701 |
| Closterium porrectum Nordstedt | Closterium porrectum | 80701 |
| Closterium porrectum var. porrectum W. West & G.S. West | Closterium porrectum var. porrectum | 80701 |
| Closterium praelongum Brébisson | Closterium praelongum | 80701 |
| Closterium pritchardianum var. pritchardianum Schm. | Closterium pritchardianum var. pritchardianum | 80701 |
| Closterium pronum Brébisson | Closterium pronum | 80701 |
| Closterium pseudolunula O.Borge | Closterium pseudolunula | 80701 |
| Closterium pusillum Hantzsch | Closterium pusillum | 80701 |
| Closterium pygmaeum Gutwinski | Closterium pygmaeum | 80701 |
| Closterium ralfsii Brébisson ex Ralfs | Closterium ralfsii | 80701 |
| Closterium rectimarginatum A.M. Scott & Prescott | Closterium rectimarginatum | 80701 |
| Closterium regulare Schmidle | Closterium regulare | 80701 |
| Closterium rostratum Ehrenberg ex Ralfs | Closterium rostratum | 80701 |
| Closterium rostratum var. rostratum W. West | Closterium rostratum var. rostratum | 80701 |
| Closterium scoticum W.B.Turner | Closterium scoticum | 80701 |
| Closterium semicirculare Willi Krieger & Scott | Closterium semicirculare | 80701 |
| Closterium setaceum Ehrenberg ex Ralfs | Closterium setaceum | 80701 |
| Closterium spetsbergense Borge | Closterium spetsbergense | 80701 |
| Closterium strigosum Brébisson | Closterium strigosum | 80701 |
| Closterium striolatum var. striolatum G.A. Klebs | Closterium striolatum var. striolatum | 80701 |
| Closterium subjuncidiforme Grönblad | Closterium subjuncidiforme | 80701 |
| Closterium sublaterale Ruzicka | Closterium sublaterale | 80701 |
| Closterium subscoticum Gutwinski | Closterium subscoticum | 80701 |
| Closterium tortum J.W. Griffith | Closterium tortum | 80701 |
| Closterium toxon W. West | Closterium toxon | 80701 |
| Closterium tumidulum F.Gay | Closterium tumidulum | 80701 |
| Closterium tumidum var. tumidum Grönblad | Closterium tumidum var. tumidum | 80701 |
| Closterium turgidum Ehrenberg ex Ralfs | Closterium turgidum | 80701 |
| Closterium variable Brook | Closterium variable | 80701 |