A slide of Grovea pedalis from Flume Gully, Oamaru, New Zealand. Single example on the slide, mounted with the rim towards the coverslip (underside view). Mounted in Naphrax and dated 15/10/[19]71. Prepared by Richard Gosden. Olympus BHB microscope using 450nm LED light. 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. 52 images stacked in Zerene (Pmax) for the full stack including the rim, and 22 images for the one without the rim which shows the ‘top’ and the eight ocelli.
Grovea pedalis (Grove & Sturt) A.W.F.Schmidt 1896. Published in: Schmidt, A.[W.F.] (1890). Atlas der Diatomaceen-kunde Series IV: Heft [37/38]. pp. pls 145-152. Leipzig: Fues’s Verlag (R. Reisland). Schmidt’s Atlas Plate 149, Figure 18. Homotypic synonyms: Biddulphia pedalis Grove & Sturt 1887, Odontella pedalis (Grunow & Sturt) Grunow 1888.
A rather special slide, and one of my wish list diatoms.