Two examples of Triceratium favus var. maxima from Oamaru, New Zealand. Mounted in Hyrax (these were very high contrast images). Prepared by JA Long. Olympus BHB microscope using 450nm LED light. 20x Nikon Plan Apo NA 0.65 objective. Olympus Aplanat Achromat condenser, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 56 images stacked in Zerene (Pmax).
Triceratium favus var. maximum Grunow 1882. Published in: Van Heurck, H. (1882). Synopsis des Diatomées de Belgique. Atlas. pp. pls LXXVIII-CXXXII [78-132 and supplementary pls 22 bis, 82bis, 83bis, 83ter, 95bis], tables genres. Anvers: Ducaju et Cie. Plate CVII [107], Figure 5 (as ‘maxima‘).