Helical algae

Images made through a microscope. All subject types.

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Olympusman
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Joined: Sun Jan 15, 2012 12:31 pm

Helical algae

Post by Olympusman »

This is an algae I had never seen before. The strand twists in a helix.

Image

Image
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

rekuwi
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Location: Wiesbaden, Deutschland

Post by rekuwi »

Hi,

looks like Desmidium sp.

Regi

Olympusman
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Joined: Sun Jan 15, 2012 12:31 pm

Algae

Post by Olympusman »

Thanks for the lead. It didn't occur to me that this might be a desmid. I referred to Desmids of the United States and found a match. It looks like it is Hyalotheca.

http://protist.i.hosei.ac.jp/PDB/Images ... sp_11.html
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

Gerd
Posts: 152
Joined: Sat Aug 05, 2006 3:56 pm
Location: Duesseldorf, Germany

Post by Gerd »

Hi,
i do not think this is hyalotheca.
There is no mucilage and hyalotheca never forms twisted filaments.
You might find this link useful:
http://protist.i.hosei.ac.jp/PDB/Images ... index.html

Thanks for posting the nice image,
Gerd

Olympusman
Posts: 5079
Joined: Sun Jan 15, 2012 12:31 pm

Desmidium

Post by Olympusman »

Thanks -- I'll go with Desmidium for the genus and leave it at that. Mine looks close to the swartzii species. What's really interesting is the individual desmids that are not part of a strand. I'll have to look for some of thise in my sample.
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

Wim van Egmond
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Post by Wim van Egmond »

Very nice, I am pretty sure it is desmidium swartzii.

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