Staurastrum tohopekaligense

Images made through a microscope. All subject types.

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NikonUser
Posts: 2676
Joined: Thu Sep 04, 2008 2:03 am
Location: southern New Brunswick, Canada

Staurastrum tohopekaligense

Post by NikonUser »

EDIT: was Desmid ID ?
Collected from a lake outlet. Is this a Staurastrum sp.?

Another active swimmer (drifter?), appears to be surrounded with a mucilaginous matrix.
Quite a deep 3-dimensional alga. Each half has 12 projections: 2 pointing upwards and 2 pointing outwards (these 4 repeated on the lower surface), plus 4 sticking straight out from the circumference.

BHS 40x SPlan Apo. 2.5x photoeyepiece; 33 frames @0.002 mm, ZS PMax stack; single flash.

Image
NUM10021
Last edited by NikonUser on Sat Aug 28, 2010 9:18 am, edited 1 time in total.
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
Olympus microscope and objectives

rekuwi
Posts: 83
Joined: Mon Jan 12, 2009 9:22 am
Location: Wiesbaden, Deutschland

Post by rekuwi »

Hallo NU,

could be Xanthidium sp.

(Staurastrum haben meistens einen dreieckigen Querschnitt und sind auch nicht so groß)

greetings
Regi

Ernst Hippe
Posts: 205
Joined: Sun Aug 16, 2009 9:41 am
Location: Germany

Post by Ernst Hippe »

Hallo NU,
after consulting the specialist Rupert Lenzenweger:
It's Staurastrum tohopekaligense! Funny name but correct.
Regards
Ernst Hippe

NikonUser
Posts: 2676
Joined: Thu Sep 04, 2008 2:03 am
Location: southern New Brunswick, Canada

Post by NikonUser »

Thank you both.

I checked the WWW and Xanthidium seemed a good match.

Ernst: most grateful for that positive ID.

I have just started looking at pond water and am amazed/intrigued by the number and variety of organisms in just a jar of water.
Looks like years of study ahead of me.
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
Olympus microscope and objectives

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