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".]

Click on a link to view the image; all images now open in a new window,
so you can have more than one open at once to compare them.
Close the window to return to this page.
Other pages (eg. see links to images sorted by genus or by location) have thumbnail images and descriptive notes.

A   B   C   D   E   F   G   H   K   L   M   N   O   P   Q   R   S   T   U  V   W   X   Z  



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

Anabaena  1  2

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