Index

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

[ALGALWEB CONTENTS]      

D    

 

Desmidium swartzii  1  2 3

 

filamentous Desmid: cells are triangular in end view with a notch in side view, cells joined at a slight angle to each other so that the third corners form a spiral. SCO366 Camphill resr.
 

?Diadesmis sp.  1

filamentous Diatom: rectangular cells joined side-by-side forming a ribbon.
Kindrogan Pond
  Diatoma ehrenbergi 1 filamentous Diatom: rectangular cells joined at the corners by mucilage pads forming a zig-zag colony. Ends capitate R. Yarrow
  Diatoma vulgaris   1   2 filamentous Diatom: rectangular cells joined at the corners by mucilage pads forming a zig-zag colony. Not capitate. Douglas Water
R. Yarrow
  Dicellula 1   2   3   Chlorophyte: coenobium of 2 ovoid cells joined along long axis, with many long spines; parietal chloroplast(s) Green Lochan
  Dichothrix  1   2   3   4 filamentous, colony-forming Cyanobacterium: false-branching taperiing filaments with basal heterocysts in a yellow-brownish sheath, ending in multicellular hairs. Differs from Calothrix in that it may have many filaments in a common sheath. SCO172
SCO067
SCO330
Kilchiaran L.
 
  Dichotomococcus  1   colonial Chlorophyte (coenobium): cells are united by mother cell-wall remnants in a mucilage sheath. Cells elongated, spindle-shaped. Loch Gorm
  Dictyosphaerium  1  2 3  4 colonial Chlorophyte (coenobium): cells in multiples of 4 towards outside of a mucilage sheath. The spherical cells are at the ends of dichotomously branching threads, with cup-shaped chloroplasts. Loch Gorm
Millport
L. Conailbhe
  Dictyosphaerium pulchellum  1   2 Loch Uigedail
L.Chon
  Didymosphenia geminata 1   2   3   4
Diatom: attached to surfaces by stalks, with the cells in pairs; cf. Achnanthes and Gomphonema, but cells much larger, a distinctive shape, and with clearly visible markings on the frustule. Kindrogan Pond
R. Yarrow
 
  Dinobryon  1   2   3
colonial Chrysophyte: cells in flask or funnel-shaped loricas forming a branched colony: flagella visible in fresh material. Loch Skeen
SCO379
Loch Chon
Loch an Eilein
  Diplostauron sp.  1 flagellate Bemersyde
       
  Dispora   1 (Prescott) colonial Chlorophyte: oval cells in irregular groups of 4, forming a flat plate - (possibly Crucigenia ?) Shewington
  Draparnaldia  1   2   3 filamentous Chlorophyte (Chaetophorales): branched, with main axes a larger diameter than the short, tufted branches which arise from main axis cells. Branches end in pointed cells, or hairs when phosphorus is scarce. Chloroplast is a parietal band. Loch Skeen
     
 

E       BACK TO TOP

  Ellerbeckia arenaria  1 Diatom:forms chains of large cells R. Creran
    Diatom:cells with a curved dorsal and more or less straight ventral margin, can be solitary, motile, but frequently found in mucilage tubes. Frustule markings fairly readily visible  
  Encyonema caespitosum  1 Douglas Water
  Encyonema minutum 1 R. Creran
  Encyonema prostratum   1  2 R.Yarrow
  Encyonema silesiacum   1 Loch Fada
 
  Enteromorpha sp. 1 2 3 Branched filamentous Chlorophyte: macroscopic filaments forming hollow tubes, characteristic of nutrient enriched marine/brackish water Ravenglass
Craiglockhart Pond
       
  Epithemia sp.  1 Diatom: Loch Chon
 
  Euastrum: desmid, cell composed of 2 symmetrical semicells with relatively flat aspect in face view ( polar view elliptical).
Compare with Cosmarium, which lacks an apical notch.

 
  Euastrum ansatum   1 2   Loch Gorm
L. Conailbhe
  Euastrum bidentatum   1 2  3 4     SCO172
Loch Skeen
L. Conailbhe
Lower L. Glenastle
  ?Euastrum binale v. gutwinski   1     L. Tallant
  Euastrum crassum   1 2 3   SCO172
Loch Chon
  Euastrum denticulatum  1 2  3    L. Ruime
L. Chon
  Euastrum didelta   1  2   L. Skeen
Loch Trool
  Euastrum dubium  1  2   L. Conailbhe
Kilchiaran L.
  Euastrum elegans   1  2     SCO172
L. Conailbhe
  Euastrum inerme   1   L. Chon
  Euastrum insulare   1  2   L. Conailbhe
Loch Trool
  Euastrum insigne   1  2    Beinne Sholum
Loch Trool
  Euastrum oblongum   1  2  3   L. Fada
L. Conailbhe
R. Creran
  Euastrum pectinatum 1   SCO140
  Euastrum pinnatum  1 2   Loch Trool
  Euastrum verrucosum 1   2   3   4  5   SCO172
L. Gorm
L. Chon
Lower L.Glenastle
Loch an Eilein
 
  Eucapsis alpina  1 2 3 4 5  6 7  8 colonial Cyanobacterium: spherical cells in groups of 4 in a cubical arrangement within a colonial mucilage. L. Gorm
Ardnave L.
L. Chon
Millport
 
  Eudorina   1 2 3 4  5
colonial Chlorophyte (flagellate): spherical / oval colony with round cells slightly separated; 2 flagella from each cell projecting through mucilage sheath. Colony motile in a tumbling, rolling motion. Shewington
L. Gorm
SCO140
L. Chon
 
  Euglena acus 1 unicellular Euglenophyte: flagellate cell with variable shape. Bemersyde
  Euglena oxyuris 1  2 Bemersyde
  Euglena tripteris 1  2 Bemersyde
  Euglena viridis  1  2  3 4
Benhaar bing
 
  Eunotia bilunaris 1 2 Diatom: rectangular in girdle view; narrow, curved in valve view; various shapes, attached to surfaces or to each other by mucilage pads. SCO067
SCO330
  Eunotia flexuosa 1 R. Creran
  Eunotia minor 1 2 Shewington
Stac Pollaidh
  Eunotia robusta  1 L. Ruime
 


F       BACK TO TOP

  Fragilaria sp.  1  2  3  4  filamentous Diatom: cells linked by valves to form long ribbons. SCO067
R. Creran
Millport resr.
Yarrow Water
  Fragilaria capucina  1  2  3  4   Yarrow Water
R. Creran
       
  Fragilariaforma virescens   1 2  3  4   5 Diatom:rectangular in girdle view, may form chains R. Creran

[ALGALWEB CONTENTS]  

John Kinross