Alphabetical list of algal images (no thumbnails, for fast loading), with brief descriptions.
[NB. IDs have been checked against "The Freshwater Algal Flora of the British Isles":
however some older IDs using "How to Know the Freshwater Algae" (Prescott) do not appear in FAFBI, and are marked "Prescott".]

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  Actinotaenium curtum  1 'Saccoderm' desmid Loch Trool
  Amphora veneta  1 diatom Bemersyde

Anabaena  1

planktonic filamentous Cyanobacteria: beaded cells with heterocysts & akinetes L. Skeen
  Anabaena spiroides  1
Anabaena flos-aquae  1   2    3   4   5   6
  L. Fada
Ardnave L
  Ankistrodesmus   1   2 colonial Chlorophyte: clustered needle-like cells L.Gorm
  Ankistrodesmus falcatus  1   L.Kinardochy
  Ankistrodesmus fusiformis   1  2  3   L.Conailbhe
Loch Gearach
Lily Loch
  ?Apatococcus 1 colonial Chlorophyte: like Desmococcus, this is usually considered subaerial, found on stones, walls, etc. Bemersyde
  Aphanizomenon flos-aquae  1  2 Filamentous cyanobacterium, clusters in floating bundles, bloom-forming. Filaments usually with heterocysts visible. Millport
  Aphanocapsa 1   2   3   4   5   colonial Cyanobacteria: cells in a common mucilage sheath L Tallant
Kindrogan pond
L Kinardochy
  Aphanocapsa delicatissima  1   Ardnave L.
  Aphanocapsa elachista    1  2 3  4   Ardnave L.
Loch Gearach
  Aphanocapsa grevillei   1   L.Chon
  Aphanochaete 1  2  3   filamentous Chlorophyte: epiphytic on other algae; cells have setae Shewington
  Aphanothece  1 colonial Cyanobacteria: cells in a common mucilage sheath L Tallant
  Aphanothece castagnei  1   L.Gorm
  Aphanothece clathrata     
  Aphanothece microscopica  1   2   L.Gorm
  Aphanothece stagnina  1  2  3  4  5  6   Ardnave L.
Union Canal
  Apiocystis 1   2  3 colonial Chlorophyte: cells in a common mucilage sheath, with setae projecting beyond the sheath Shewington
  Asterionella formosa  1  2 colonial Diatom: long cells in stellate formation L. Skeen
  Asterocystis (Chroodactylon) 1   2   3   4   5   6  
filamentous Rhodophyte: false-branched filaments with stellate chloroplasts and pyrenoid: frequently blue-green Millport
  Asterococcus  1   2   3   4  ?5  ?6   7  8   Kindrogan pond
Loch an Eilein
L. Ballygrant
R. Yarrow
  Asterococcus limneticus 1   2  3   4
colonial Chlorophyte: small numbers of cells in a concentrically layered mucilage; chloroplast stellate Millport
  Audouinella  1   2   3   4   5   6 filamentous Rhodophyte: relatively short filaments sometimes forming a reddish turf on rocks, etc., branched with red (sometimes grey-green) disclike chloroplasts Islay
Gore Glen
R. Creran
Douglas Water
  Aulacoseira (Melosira) 1  2   3 filamentous centric (pill-box shaped) Diatom; cells linked by spines, chloroplasts discoid L. Skeen
Douglas Water


  Bambusina 1  2 3 filamentous desmid Loch Trool
Beinne Sholum
Loch an Eilein
1   2   3   4   5   6   7   8   9   10   11  12   13
filamentous Rhodophyte: branched, with smaller braches in tufts or whorls, giving the plant a beaded appearance ("Frog-spawn alga") Islay
Glen Trool
Loch Trool
R. Creran
R. Ettrick
  Binuclearia 1   2   3   4 filamentous Chlorophyte: cells usually grouped in pairs with thickened, lamellate cell walls
Stac Pollaidh
Loch Trool
  Botrydium 1   2   3   Siphonaceous xanthophyte, consisting of a bulbous aerial thallus with colourless branching rhizoids growing in drying mud at the edge of ponds Shewington
  Botryococcus 1   2   3   4   5   6   7   8   9   10   11  12 13 colonial Chlorophyte: planktonic, sometimes bloom-forming. Colony is very dense making cells hard to see, contains yellow oil droplets which can be squeezed out under a coverslip L Tallant
Hidden Lochan
L. Skeen
L. Chon
L. Gearach
Lily Loch
  Bulbochaete 1 2 3 4  5 filamentous Chlorophyte; branched with tapering cells each of which bears a hair cell with a bulbous base. L. Chon
Lily Loch
R. Ettrick



John Kinross