| Catalogue of Diatom Names, On-Line Version, Updated 19 Sep 2011 |
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| Navicula difficilis Grunow in Van Heurck 1880, pl. 12, fig. 16-17 | |||
| Status | valid | ||
| Published in | Van Heurck, H. 1880 [ref. 000895]. Synopsis des Diatomées de Belgique. Atlas. Ducaju & Cie., Anvers. pls 1-30. | ||
| Type | Click here to view INA card. Click here to check this name in the INA website. | ||
| Collector | Assessment of record accuracy | likely accurate | |
| List of nomenclatural synonyms | Anomoeoneis zellensis f. difficilis (Grunow in Van Heurck) Hustedt 1959 Brachysira zellensis f. difficilis (Grunow in Van Heurck) P.B. Hamilton in Hamilton, Poulin, Charles & Angell 1992 | ||