(Correction) NOT Pinnularia sp. - Navicula oblonga

[Beatsy]

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.

[beamish]

Whow! Superb...

Martin

[RainerTeubner]

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

[Beatsy]

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.

[beamish]

Nevertheless it ia stunning picture!

[anne]

Hi Steve,
wonderful, one of the "jackpot" test resolution diatoms.
best
anne