My mistake - this is Navicula oblonga. No wonder I couldn't find it. Original (incorrect) post follows
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I can't identify the species. P. fonticola was the closest I found in my limited reference material, but it's probably not that. This one came from a freshwater pond sample (cleaned).
Specimen mounted in zrax (part of a strew) and shot under annular illumination using an oiled Heine condenser with a 365nm UV light source. Olympus BX61 scope, UPlanSApo 100x/1.40 objective and a Sony A7riv camera (full-spectrum conversion). A single pixel-shifted shot (no focus stacking). Background "distractions" were blurred in post-processing.
Thanks for looking.
Whow! Superb...
Martin
Hello,
Mr. Ringel (I think, You know him) called me and told that the diatom shown is no Pinnularia sp, but a Navicula oblonga Kützing 1844.
Kind regards
Rainer
Arg! I made so many mistakes identifying Pinnularia as Navicula in the past, I seem to have over corrected. I'll correct the title, but just note Hubert's correction in the text. Thanks for passing the message on Rainer.
Nevertheless it ia stunning picture!
Hi Steve,
wonderful, one of the "jackpot" test resolution diatoms.
best
anne