| Planothidium delicatulum (Kütz.) Round & L. Bukhtiyarova, 1996 |
| Planothidium dubium (Grunow) F. E. Round & Bukhtiyarova, 1996 |
| Planothidium ellipticum (Cleve) Round & L. Bukhtiyarova, 1996 |
| Planothidium ellipticum (Cleve) M.B. Edlund, 2001 |
| Planothidium frecuentissimum (Lange-Bert.) Round & L. Bukhtiyarova, 1996 |
| Planothidium hauckianum (Grunow) Round & L. Bukhtiyarova, 1996 |
| Planothidium haynaldii (Schaarschm.) Lange-Bert., 1999 |
| Planothidium heidenii (Schulz-Danzig) Witkowski |
| Planothidium lanceolatum (Bréb.) Lange-Bert., 1999 |
| Planothidium lemmermannii (Hust.) E.A. Morales, 2006 |
| Planothidium rostratoholarcticum Lange-Bert.& M. Bak, 2014 |
| Psammothidium (Bukhtiyarova) Round, 1996 |
| Psammothidium kryophilum (J.B. Petersen) Reichardt, 2004 |
| Psammothidium marginulatum (Grunow) L. Bukhtiyarova & Round, 1996 |
| Schizostauron Grunow, 1867 |
| Schizostauron crucicula Grunow, 1881 |