Van Heurck -- Synopsis des Diatomées de Belgique -- Index
| Ditylum | brightwellii (T.West) Grunow | Page 196 | Plate 114 | Figure 4,8,9 | |
| Ditylum | brightwellii var. inaequalis (Bailey) Grunow | Page -- | Plate 114 | Figure 3,5,6,7 | |
| Ditylum | brightwellii var. tetragona Grunow = Ditylum brightwellii (T.West) Grunow | Page -- | Plate 114 | Figure 4,8 | |
| Ditylum | brightwellii var. trigona Grunow = Ditylum brightwellii (T.West) Grunow | Page -- | Plate 114 | Figure9 | |
| Ditylum | inaequale Bailey = Ditylum brightwellii var. inaequalis (Bailey) Grunow | Page -- | Plate 114 | Figure 3,5,6,7 | |
| Ditylum | intricatum (T.West) Grunow | Page 196 | Plate 114 | Figure 2 | |
| Ditylum | sol (autor ?) Grunow = Triceratium sol (autor ?) Grunow | Page -- | Plate 115 | Figure 1,2 | |
| Ditylum | trigonum Bailey = Ditylum brightwellii (T.West) Grunow | Page 196 | Plate 114 | Figure 9 | |
| Ditylum ? | ehrenbergii Grunow =?Triceratium ehrenbergii Grunow | Page -- | Plate 115 | Figure 7,8 | |
| Ditylum ? | undulatum (Ehrenb.) = Triceratium undulatum Ehrenb. | Page -- | Plate 116 | Figure 7 |