Strew slide from Chatsworth Park, Derbyshire. Horse trough near road bridge. Mainly Cymbella sp. and what I am fairly sure is Ellereckia arenaria. Mounted in Aroclor and dated April 1975. Prepared by Bernard Hartley. Olympus BHB microscope using 450nm LED light. I chose an example of the Ellerbeckia for high magnification imaging. 63x Leitz Pl Apo 1.4 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 41 images stacked in Zerene (Pmax).
Ellerbeckia arenaria (D.Moore ex Ralfs) Dorofeyuk & Kulikovskiy 2012. Published in: Dorofeyuk, N. & Kulikovskiy, M. (2012). Diatoms of Mongolia. Biological resources and natural conditions of Mongolia. Proceedings of Joint Russian-Mongolian Complex Biological Expedition. Vol. LIX. pp. [1]-367, incl. 4 pls. Moscow: Institute of Ecology and Evolition RAN. Page 29.
Original name Melosira arenaria D.Moore ex Ralfs 1843. Published in: Ralfs, J. (1843). On the British Diatomaceae. Annals and Magazine of Natural History 12: 346-352, 1 pl. [pl. 9]. Page 349, Plate 9, Figure 4.
There is an entry from Bernard Hartley’s Sample and Strew Slide Collection PDF for this – slide 657 – accessed from here.