A strew from Norman’s Bay, Sussex, UK. Wide range of species present. Collected by HH Gleave, 27th August 1980, sandy beach. Mounted in Hyrax, mounted October 1983. Slide 1277. Prepared by Bernard Hartley. Olympus BHB microscope using 450nm LED light. As well as the strew, I imaged a Donkinia recta using the 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. 24 images stacked in Zerene (Pmax).
Donkinia recta (Donkin) Carruthers 1864. Published in: Carruthers, W. (1864). The Diatomaceae. In: Handbook of British water-weeds or algae. (Gray, J.E. Eds), pp. 75-116. London: R. Hardwicke, Piccadilly. Page 113. This name is currently regarded as a synonym of Carinasigma rectum (Donkin) G.Reid, 2012. Published in: Reid, G. (2012). A revision of the family Pleurosigmataceae (Bacillariophyta). pp. [1] 7-162 [163], 24 pls.. Ruggell: A.R.G. Gantner Verlag K.G.. Page 96, Plate 19, Figure 9.