Two examples of Surirella baldjickii from Golfe-Juan, France. Prepared by JA Long. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 28 images stacked in Zerene (Pmax). Slightly stippling seen across the flatter areas of the diatoms. Looking at the original images this is present in the mountant rather than a feature of the diatoms as it is present all over the slide.