Attached
pond algae:
List for
my garden pond at Shewington.
Algae were settled on slides in the pond for a period, then allowed to grow on in filtered pond water.
Some identifications are unconfirmed ('?').
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the image below to see it full-size;
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2000, 2001 |
2002, 2004, 2005 |
Description | |
| Achnanthes |
+ |
Diatom | |
| Achnanthidium minutissima |
+ |
Diatom |
|
| Amphora veneta |
+ |
Diatom |
|
| Ankistrodesmus |
+ |
Chlorophyte; long, pointed cells linked in middle. |
|
| Aphanochaete |
|
Chaetophoracean Chlorophyte, epiphytic, with hair cells |
|
| Apiocystis |
|
 |
Chlorophyte, forming club-shaped colonies in a mucilaginous sheath. Note
the pseudocilia. |
| Askenasyella |
|
The cells are at the end of short, individual stipes |
|
| Asterococcus |
|
The name derives from the stellate (star-shaped) chloropasts |
|
| Binuclearia |
|
Filamentous Chlorophyte, cells in a lamellate mucilaginous tube |
|
| Botryococcus |
|
Chlorophyte, cells almost totally obscured within a dense matrix containing oil: colonies linked by mucilaginous threads |
|
| Bulbochaete |
?
|
Chlorophyte, Oedogoniales: has bulbous cells with long spines |
|
| Calothrix |
|
Cyanobacterium, tapering filament with a basal heterocyst |
|
| Chaetophora |
|
Chaetophoracean Chlorophyte, much branched |
|
| Chaetopeltis |
|
||
| Chaetosphaeridium |
|
a colony of globular cells, each with a sheathed seta |
|
| Characium |
|
Chlorophyte. Cells are attached by a short stipe |
|
| Chlorosarcina |
|
Chlorophyte. Note the close mucilage sheath |
|
| Chlorosarcinopsis
|
|
Chlorophyte. This colony has no sheath |
|
| Chrysosphaera paludosa | 
 |
Chrysophyte. Frequently epiphytic, in 16-celled coenobia. | |
| Closterium |
|
Desmid | |
| Cocconeis sp. |
+ |
Diatom |
|
| Coenochloris ? |  |
Chlorophyte, coenobia of cells in multiples of 2 in a mucilaginous envelope | |
| Coleochaete orbicularis |
|
  |
Chlorophyte, characterised by most cells having a sheathed seta (hair) |
| Coleochaete irregularis |
|
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 abbreviatum |  |
Desmid | |
| Cosmarium galeritum |
? |
Desmid |
|
| Cosmarium subcrenatum |
|
Desmid |
|
| Crucigenia |
+ |
 |
Chlorophyte, cells regularly arranged in multiples of 4 in mucilaginous coenobium |
| Crucigeniella irregularis |  |
Chlorophyte, cells irregularly arranged in multiples of 4 in mucilaginous coenobium | |
| Cylindrocystis |  |
Saccoderm desmid (Chlorophyta) | |
| Cymbella ?cistula |
+ |
Diatom |
|
| Desmococcus |
+ |
 |
Chlorophyte, cells in groups formed by division in 3 planes, most commonly found growing subaerially on trees, fences, etc. |
| Dimorphococcus | 
 |
Chlorophyte, cells at the end of branching gelatinous strands, but kidney-shaped rather than globular like Dictyosphaerium | |
| Dispora |
|
Chlorophyte. Not listed in FAFBI, but present in Algaebase |
|
| Elaktothrix gelatinosa |  |
Chlorophyte, colonial in a mucilage sheath | |
| Encyonema |
+ |
Diatom |
|
| Euastrum insulare . |
|
Desmid |
|
| Eunotia minor |
|
Diatom |
|
| ?Fernandinella alpina |  |
Colonial Chlorophyte. | |
| Gloeocystis |
|
Chlorophyte. Cells are in a mucilage sheath, often seen to have concentric layers: no pseudocilia (cf. Tetraspora) |
|
| Gomphonema |
|
Diatom |
|
| Gomphonema angustatum |  |
Diatom |
|
| Hormidium |
|
Filamentous Chlorophyte |
|
| Microspora 11µm. |
|
Filamentous Chlorophyte with H-shaped wall structures |
|
| Microthamnion |
|
 |
The cells are less than 5µm broad: this is a Chaetophoracean, relative of Stigeoclonium |
Mischococcus
|
|
Mischococcus, a Xanthophyte, is 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 µm. |
|
Chlorophyte, axial band chloroplast with pyrenoids more |
|
| Mougeotia 25 µm. |
|
||
|
Naegeliella |
|
Chrysophyte: these 2 adjacent images show the colony and the branching gelatinous hairs |
|
|
Navicula sp. |
|
Diatom |
|
| Navicula protractoides |
|
Diatom |
|
| Nephrocytium |
+ |
Chlorophyte, groups of 4 kidney-shaped cells in a mucilage envelope. | |
| Nitzschia gracilis |
+ |
Diatom |
|
| Nostoc |
|
Colonial cyanobacterium | |
| Oedogonium
6µm |
|
Chlorophyte, Oedogoniales. Cells typically taper and have growth rings at the distal end. |
|
| Oedogonium
6µm |
|
||
| Oedogonium
11µm |
+ |
||
| Oedogonium
11µm |
+ |
||
| Oedogonium
15µm |
|
The calyptra is an extension of the terminal cell | |
| Oedogonium
15µm |
|
||
| Oedogonium
30µm |
+ |
||
| Ophiocytium |
|
Xanthophyte | |
| Oscillatoria |
|
Filamentous Cyanobacterium, motile | |
| Phormidium |
+ |
 |
Filamentous Cyanobacterium, in a thin mucilage sheath |
| Pseudanabaena |
|
Filamentous Cyanobacterium, very narrow cells with a beaded appearance | |
| Quadricoccus |  |
Chlorophyte, forms coenobia in a mucilage envelope | |
| Selenastrum quadricaudum |
|
Chlorophyte, found in groups of 4 cells | |
| ?Sphaerobotrys |  |
Colonial Chlorophyte | |
| Spirogyra |
|
Filamentous Chlorophyte with characteristic spiral chloroplasts | |
| Stauroneis anceps |
+ |
Diatom | |
| Stauroneis legumen |
|
Diatom | |
| Stigeoclonium farctum |
|
Chaetophoracean genus, with basal and erect system and terminal hair cells. |
|
| Stigeoclonium helveticum |
|
||
| Stigeoclonium tenue |
|
||
| ?Tetrachlorella alternans |  |
Chlorophyte, typically in coenobial, cells in multiples of 4 | |
| Tetraspora |
|
Chlorophyte: the pseudocilia may or may not be visible. Cells are in 2's or 4's at the periphery of the mucilage. |
|
| Tribonema 4µm. |
|
Xanthophyte, like Microspora, this genus has walls composed of H-shaped fragments |
|
| Uronema | 
 |
Chlorophyte, with pointed apical cell and tapering basal cell with holdfast, single parietal chloroplast |
For more pond algae see the collection from Kindrogan Pond: here
John Kinross
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Page updated 15/12/2019
