Epithemia, Frustulia, Gyrosigma

[rnabholz]

One new form, Epithemia turgida, and a couple of familiar ones, Frustulia and Gyrosigma

AO 10. Ortho Illuminator, 100 and 50x Iris Plan Achro, 214 Darkfield Condenser, Canon 70D, Single frames.

Epithemia turgida 41µm 100x

Epithemia turgida 0054.JPG (47.93 KiB) Viewed 4661 times

Frustulia 86µm 100x

Frustulia 0091.JPG (74.08 KiB) Viewed 4659 times

Gyrosigma 202µm 50x

Gyrosigma 0103.JPG (110.18 KiB) Viewed 4659 times

[gekko]

All are beautiful! The first one appears to have a very interesting structure.

[vasselle]

Bonjour
Très belles séries.
J'aime beaucoup la deuxième photo.
Et merci pour le partage.
Cordialement seb

[c-krebs]

Rod,

Darkfield at these magnification is no "piece of cake".... well done!
How do you find that AO 50X, I've heard good things about it.

[zzffnn]

Wow, Rod is going nuts with those dots great job!

[rnabholz]

All are beautiful! The first one appears to have a very interesting structure.

Isn't it interesting? My first encounter with that one, and mercifully I was able to find a good reference showing only a few possible families and species. Really intricate structure.

Here is a scanning electron microscope image of a related species that I think is worth the time to check out: https://westerndiatoms.colorado.edu/tax ... emia_sorex

Thanks

Rod

[rnabholz]

Bonjour
Très belles séries.
J'aime beaucoup la deuxième photo.
Et merci pour le partage.
Cordialement seb

Merci Seb.

[rnabholz]

Rod,

Darkfield at these magnification is no "piece of cake".... well done!
How do you find that AO 50X, I've heard good things about it.

Thank you Charles.

I am in my first week of ownership of the 50x, and am pleased so far. I seems to perform very well, and it is a real convenience to switch from the 100 oil to the 50 oil with out worrying about fouling a dry 40.

Thanks for commenting.

Rod

[rnabholz]

Wow, Rod is going nuts with those dots great job!

Thanks kindly zz.

[KurtM]

Always love those Epithemiods, and getting very interested in Frustularia too. Haven't found any of the latter on any of the slides you sent (still have one to go), and I begin to suspect you picked 'em all out so I wouldn't get any. Be that way.

[rnabholz]

Always love those Epithemiods, and getting very interested in Frustularia too. Haven't found any of the latter on any of the slides you sent (still have one to go), and I begin to suspect you picked 'em all out so I wouldn't get any. Be that way.

Well with your attitude, you'll be lucky if you ever see any.....

The TRUTH is the Frustulia have all been from my latest batch that came from the Maquoketa River, and that sample was gathered after I had sent your slides.

IF your attitude improves, I will set a slide or two aside for your next package. ;^)

[molehill]

Hi rnabholz

Nice images
What is a good recourse for identifying diatoms?

molehill

[rnabholz]

Hi rnabholz

Nice images
What is a good recourse for identifying diatoms?

molehill

Thank you

This is the gold standard site for IDs in my opinion:

http://westerndiatoms.colorado.edu

[KurtM]

IF your attitude improves...

IF is a mighty big word for being only two letters long. My father has been waiting 56 years for my attitude to improve; the poor old guy just turned 90, and is still waiting.

[billbillt]

Great photos!... Clarity and detail is very good!...

BillT