筒柱藻属本属包括以下物种: 巴西筒柱藻 Cylindrotheca brasiliensis Lohmann, 1919 新月筒柱藻 Cylindrotheca closterium (Ehrenberg) Reimann & J.C.Lewin, 1964 Cylindrotheca fusiformis Reimann
菱形藻属Nitzschia clementia Gombos, 1976 新月菱形藻 Nitzschia closterium (Ehrenberg) W.Smith, 1853 Nitzschia closterium Eulenstein, 1868 Nitzschia closteroides Hasle