Van Heurck, H., 1880
Van Heurck, H. (1880). Synopsis des Diatomées de Belgique Atlas. pls I-XXX [pls 1-30]. . Anvers: Ducaju et Cie.
No text other than the plate legends but the names are valid as they are "validated by analytical figures (see ICN Art. 38.7 "For the purpose of Art. 38.5, prior to 1 January 1908, an illustration with analysis (see Art. 38.9 and 38.10) is acceptable in place of a written description or diagnosis.").