Division Bacillariophyta Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919)
   Class Bacillariophyceae Haeckel (1878) - pennates
     Subclass Bacillariophycidae D.G.Mann (1990) - raphid diatoms
       Order Cymbellales D.G.Mann (1990)
         Family Cymbellaceae Grev. (1833)
           Genus Encyonema Kütz. (1833)
             01 Encyonema alpinum (Grunow) D.G.Mann (1990)
             02 Encyonema braunii (Hust.) D.G.Mann (1990)
             03 Encyonema brehmii (Hust.) D.G.Mann (1990)
             04 Encyonema elginense (Krammer) D.G.Mann (1990)
             05 Encyonema formosum (Hust.) D.G.Mann (1990)
             06 Encyonema grossestriatum (O.Müll.) D.G.Mann (1990)
             07 Encyonema javanicum (Hust.) D.G.Mann (1990)
             08 Encyonema juriljii (Hust.) D.G.Mann (1990)
             09 Encyonema lacustre (C.Agardh) D.G.Mann (1990)
             10 Encyonema latens (Krasske) D.G.Mann (1990)
             11 Encyonema mesianum (Cholnoky) D.G.Mann (1990)
             12 Encyonema minutum (Hilse) D.G.Mann (1990)
             13 Encyonema muelleri (Hust.) D.G.Mann (1990)
             14 Encyonema obscurum (Krasske) D.G.Mann (1990)
             15 Encyonema paucistriatum (Cleve-Euler) D.G.Mann (1990)
             16 Encyonema perpusillum (A.Cleve) D.G.Mann (1990)
             17 Encyonema reichardtii (Krammer) D.G.Mann (1990)
             18 Encyonema rugosum (Hust.) D.G.Mann (1990)
             19 Encyonema silesiacum (Bleisch) D.G.Mann (1990)
             20 Encyonema spiculum (Hust.) D.G.Mann (1990)
             21 Encyonema subalpinum (Hust.) D.G.Mann (1990)
             22 Encyonema subturgidum (Hust.) D.G.Mann (1990)
             23 Encyonema tenuissimum (Hust.) D.G.Mann (1990)
             24 Encyonema caespitosum Kütz. (1849)
             25 Encyonema gracile Ehrenb. (1841)
             26 Encyonema hebridicum Grunow ex Cleve (1891)
             27 Encyonema lunatum (W.Sm.) Van Heurck (1896)
             28 Encyonema prostratum (Berk.) Kütz. (1844)
             29 Encyonema triangulum (Ehrenb.) Kütz. (1849)
             30 Encyonema turgidum (Gregory) Grunow ex A.Schmidt (1875)