Closterium Sp., Euastrum humerosum and other Desmidiaceae

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ImperatorRex
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Closterium Sp., Euastrum humerosum and other Desmidiaceae

#1 Post by ImperatorRex » Mon Sep 10, 2018 7:30 pm

Like to share more photos taken from the moor described in my article viewtopic.php?f=6&t=6386

Was very enthusiastic to view this kind of nice algea, so I have taken many photos. All done with oblique illumination.

Closterium Spec:

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unknown Algeae:

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I guess following algea are all "Euastrum humerosum var. humerosum":

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Finall a skelleton:

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Beg your pardon...maybe to many pics from the same algae.

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75RR
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Re: Closterium Sp., Euastrum humerosum and other Desmidiaceae

#2 Post by 75RR » Mon Sep 10, 2018 8:06 pm

Lovely images. Have not seen Closterium nor Euastrum in a while.
Very nice Oblique
Beg your pardon...maybe to many pics from the same algae.
Enjoyed them all!

http://algalweb.net/euastrum.htm

Perhaps: Euastrum denticulatum and Euastrum ansatum?
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Last edited by 75RR on Tue Sep 11, 2018 3:29 am, edited 1 time in total.
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Hobbyst46
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Re: Closterium Sp., Euastrum humerosum and other Desmidiaceae

#3 Post by Hobbyst46 » Mon Sep 10, 2018 8:38 pm

Enjoyed these photos.
How did you "clear" the algae and exposed the skeleton?
I once mounted a green filamentous alga in cinnamon bark oil (it contains a powerful solvent) and it was rapidly cleared, but not as completely as yours.
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rnabholz
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Re: Closterium Sp., Euastrum humerosum and other Desmidiaceae

#4 Post by rnabholz » Mon Sep 10, 2018 9:05 pm

Great series, I like them all. No such thing as too many ;)

Excellent oblique effect.

Rod

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ImperatorRex
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Re: Closterium Sp., Euastrum humerosum and other Desmidiaceae

#5 Post by ImperatorRex » Tue Sep 11, 2018 3:34 pm

Thanks Rod, Hobbyst & 75R!
75RR wrote: http://algalweb.net/euastrum.htm

Perhaps: Euastrum denticulatum and Euastrum ansatum?
Both are hot candidates, I researched a bit and found that Euastrum denticulatum shall have spikes at each end, but these are missing one my photo.
Also there are others looking quite similiar, for example So Euastrum binale (TURP.) (https://www.moor-impressionen.at/galeri ... 001611.htm). Really difficult to distinguish.
For the second one Euastrum ansatum looks really very similiar, maybe this guy looks a bit wider then the one I captured? But I also did not found a thinner one :-)
Hobbyst46 wrote:How did you "clear" the algae and exposed the skeleton?
To be honest this was nothing I prepared, the water sample already contained the skeleton :-)

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vasselle
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Re: Closterium Sp., Euastrum humerosum and other Desmidiaceae

#6 Post by vasselle » Wed Sep 19, 2018 7:46 pm

Bonjour
Très belles séries
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