Attached pond algae:

list for my garden pond at Shewington.

Some identifications are unconfirmed, and illustrations
are not available for all yet

click on the image below to see it full-size;
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Achnanthes

 

Achnanthidium minutissima

Amphora veneta

Ankistrodesmus

Apatococcus  

 

Aphanochaete  

 

Apiocystis 

note the pseudocilia.
In contrast to Tetraspora, the cells are distributed throughout the mucilage

Askenasyella  

 

The cells are at the end of short, individual stipes

Asterococcus  

The name derives from the stellate( star-shaped) chloropasts

Binuclearia  

Botryococcus  

  more

cells almost totally obscured within a dense matrix containing oil: colonies linked by mucilaginous threads

[Bulbochaete or Thamniochaete]

Calothrix  

Chaetophora 

Chaetopeltis  

 

Chaetosphaeridium  

 

a colony of globular cells, each with a sheathed seta

Characium  

cells are attached by a short stipe

Chlorosarcina

note the close mucilage sheath

Chlorosarcinopsis  

 

this colony has no sheath

Closteridium

Cocconeis sp.

Coleochaete disc form

Coleochaete is characterised by most cells having a sheathed seta

Coleochaete2 - filament form  

 

the filamentous form occurs in 2 versions: one has a definite margin to the cell while the other appears to be surrounded by a watery mucilage

Cosmarium ?galeritum

Cosmarium subcrenatum 

Crucigenia

Cymbella ?cistula

?Desmococcus

Dictyosphaerium 

The cells of Dictyosphaerium are connected by a dichotomously branching series of threads

Dispora  

 

Encyonema

?Euastrum sp.  

 

Eunotia minor  

Gloeocystis  

     

Cells are in a mucilaginous sheath, often seen to be concentric: no pseudocilia (cf Tetraspora)

Gomphonema  

 

Hormidium  

   

more

Microspora 11Ám.  

 

more

Microthamnion  

   

the cells are less than 5Ám broad: this is a relative of Stigeoclonium

Mischococcus

 

 

 

    Mischococcus appears superficially similar to Dictyosphaerium, but the cells are in linear groups of 1-4 at the ends of gelatinous tubes, rather than in pairs at the end of dichotomously branching threads

Mougeotia 20 Ám.  

 

more

Mougeotia 25 Ám.  

 

 

Naegeliella  

 

2 adjacent images showing the colony and the branching gelatinous hairs

Navicula sp.

Navicula protractoides

Nephrocytium

   

Nitzschia gracilis

   

Nostoc  

 

Oedogonium 6Ám
with long calyptra

Oedogonium 6Ám
no long calyptra  

 

Oedogonium 11Ám
no long calyptra

   

Oedogonium 11Ám
+ long calyptra  

   

Oedogonium 15Ám
+long calyptra  

 

Oedogonium 15Ám
no long calyptra  

 

Oedogonium 30Ám
no long calyptra

 

Ophiocytium  

   

 

Oscillatoria  

 

 

Phormidium

   

Pseudanabaena

 

Selenastrum quadricaudum

 

Spirogyra  

 

Stauroneis anceps

   

Stauroneis legumen

 

Stigeoclonium farctum  

 

more

Stigeoclonium helveticum  

   

more

Stigeoclonium tenue  

 

more

Tetraspora  

 

The pseudocilia may or may not be visible. Cells are in 2's or 4's at the periphery of the mucilage.

Tribonema 4Ám.  

like Microspora, this genus has walls composed of H-shaped fragments


More from my garden pond in 2004 here

For more pond algae see the collection from Kindrogan Pond: here

John Kinross

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Page updated 4/9/01