An arrangement of Auliscus hardmanianus (variants) from Palos Verdes (spelt Pelos on the slide), California, USA. Dated 1949 and mounted in Styrax. Prepared by CL Odam. Olympus BHB microscope using 450nm LED light. I imaged them in two goes and then pasted the stacks together in Photoshop. 20x Nikon Plan Apo 0.65 objective. Olympus Aplanat Achromat condenser, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. Images stacked in Zerene (Pmax).
Auliscus hardmanianus Greville 1866. Published in: Greville, R.K. (1866). Descriptions of new and rare Diatoms. Series XVIII. Transactions of the Microscopical Society, New Series, London 14: 1-9, pls I, II. Page 6, Plate 2, Figure 17.