Gomphonema geminatum, Flatters and Garnet

Gomphonema geminatum
Gomphonema geminatum arrangement, 20x Nikon Plan Apo NA 0.65 objective

Gomphonema geminatum. No location given. This is now known as Didymosphenia geminata. Prepared by Flatters and Garnet Ltd. Mounted in Sirax. Olympus BHB microscope using 450nm LED light. 63x Leitz Pl Apo NA 1.40 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, slightly oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 17 images stacked in Zerene (Pmax).