Van Heurck -- Synopsis des Diatomées de Belgique -- Index
| Meridion | circulare (Grev.) C.Agardh | Page 161 | Plate 51 | Figure 10,11,12,18[?] | |
| Meridion | circulare (Grev.) C.Agardh ? | Page -- | Plate 51 | Figure 13 | Note 120 |
| Meridion | circulare var. constrictum (Ralfs) Van Heurck | Page 161 | Plate 51 | Figure 14,15,16,A | |
| Meridion | circulare var. constrictum (Ralfs) Van Heurck ? | Page -- | Plate 51 | Figure 13 | Note 121 |
| Meridion | circulare var. zinkenii (Kütz.) Rabenh. | Page 161 | Plate 51 | Figure 17 | |
| Meridion | constrictum Ralfs = Meridion circulare var. constrictum (Ralfs) Van Heurck | Page -- | Plate 51 | Figure 14,15,16,A | |
| Meridion | marinum W.Greg., partim = Sceptroneis marina (W.Greg.?) Grunow | Page -- | Plate 37 | Figure 2 | |
| Meridion | marinum W.Greg. [partim] = Thalassiothrix marina (W.Greg. ?) Grunow | Page -- | Plate 37 | Figure 8 | |
| Meridion | zinkenii Kütz. = Meridion circulare var. zinkenii (Kütz.) Rabenh. | Page 161 | Plate 51 | Figure 17 |