An arrangement of Biddulphia edwardsii from Golden Gate, California, USA. Mounted in Hyrax. Some issues with the adhesive of the diatoms to the coverslip. Prepared by JA Long. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. 11mm of the tube to the camera removed to increase the field of view. Monochrome converted Nikon d850 camera. 64 images stacked in Zerene (Pmax).
Biddulphia edwardsii Febiger ex 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. Page 105, Plate C, Figures 9,10. This name is currently regarded as a synonym of Odontella edwardsii (Febiger ex Grunow) Grunow. Source of synonymy: Grunow, A. (1884). Die Diatomeen von Franz Josefs-Land. Denkschriften der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe, Wien 48(Abt. 2): 53-112, 5 pls.