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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Other pages (eg. see links to images sorted by genus) have thumbnail images and descriptive notes.

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[ALGALWEB CONTENTS]

 

C      

 

Caloneis
C.
cf amphisbaena 1

pennate diatom Nepal
       
  Calothrix  1  2  3  4
Calothrix parietina 1  2  3
filamentous Cyanobacterium: tapering, usually unbranched sheathed filament with terminal heterocyst. See also Dichothrix L. Gorm
L. Ballygrant
 
  Ceratium hirundinella 1   2   3   4   5   6 Dinoflagellate with 4 prominent horns
Green Lochan
Loch an Eilein
Loch Ballygrant
 
  Chaetonema irregulare   1  2   3 branched filamentous Chlorophyte: has hair cells, often broken short Lily Loch
       
  Chaetopeltis 1   2   3 colonial Chlorophyte (Tetrasporales) growing as a loose disc on surfaces, some cells with 1-2 unsheathed setae Shewington
 
  Chaetophora 1  2 3  4
Chaetophora incrassata 1   2
branched filamentous Chlorophyte: colony forms hemispherical clumps on surfaces, enveloped in a dense mucilage sheath. Repeated branching, terminal cells pointed or bearing hairs, chloroplast a parietal band Ardnave L.
R. Ettrick
 
  Chaetosphaeridium 1   2  colonial Chlorophyte: a cluster of globular cells, each with a sheathed seta Shewington
 
  Chamaesiphon 1  2  Cyanobacterium: short, grey filament epiphytic on other algae Millport
Stac Polaidh
 
  Characium 1 2    Xanthophyte: small oval / spindle-shaped cell attached to a surface by a stipe; green, parietal plate chloroplasts Shewington
Millport
 
  Chlamydomonas  unicellular Chlorophyte (Volvocales) with flagella      
 
  Chlorella  1   unicellular Chlorophyte: cells spherical, cup or plate-like chloroplast culture
  ?Chlorella saccharophila 1   cells oval greenhouse
  Chlorella vulgaris  1   culture
 
  ? Chlorosarcina  1  (Prescott) colonial Chlorophyte: small number of cells packed in a mucilage sheath, cells angular from mutual compression: eye-spot present(?) Shewington
 
  ? Chlorosarcinopsis 1   2   3    (Prescott) colonial Chlorophyte: cells in multiples of 4, not enclosed in a mucilage sheath, cell walls flattened by mutual compression Shewington
 
  Chroococcus dispersus  1 colonial Cyanobacterium, hemispherical cells in pairs within colonial mucilage L. Gorm
  Chroococcus limneticus 1   2   3   4   5   6   7 L. Gorm
Ardnave
Millport
  Chroococcus turgidus  1   2  
L. Fada
L. Tallant
 
  Chroodactylon (Asterocy(s)tis) 1   2   3   4   5   6  
filamentous Rhodophyte: false-branched filaments with stellate chloroplasts and pyrenoid: frequently blue-green Millport
 
  Cladophora  1  2  3 4 5   branched filamentous Chlorophyte; coarse texture; cells large, net-like chloroplasts, thick cell walls. Gore Glen
 
  Closteriopsis acicularis  1
unicellular Chlorophyte: long and needle-like;compare with Monoraphidium - Closteriopsis shows the presence of pyrenoids while Monoraphidium does not Bemersyde
       
  Closterium sp.    (link to illustrated list)

unicellular Desmid, varying from crescent shaped to straight: radius of curvature, dimensions and wall ornamentation distinguish species Hidden Lochan
  Closterium ?abruptum   1   R. Creran
  Closterium acerosum  1   2   Hidden Lochan
  Closterium aciculare  1  2  3   Lower L. Glenastle
R. Creran
Lily Loch
  Closterium angustatum  1  2   3  

L. Chon
L.Conailbhe

  Closterium attenuatum   1  2  3   L.Dhomhnaill
Bemersyde
  Closterium baillyanum 1  2   L. Trool
  Closterium closterioides   1  2   L. Trool
  Closterium cornu 1  2 3  4   Camphill reser.
L. Trool
  Closterium costatum   1  2  3 4  5   Loch Chon
L.Conailbhe
Loch Gearach
  Closterium dianae   1   2   3  4   5   L.Conailbhe
R. Creran
  Closterium dianae v. minus   1   2   3   L.Conailbhe
L.Dhomhnaill
Loch Gearach
  Closterium dianae v. pseudodianae  1   2   3  4   L. Chon
L.Conailbhe
L.Dhomhnaill
  Closterium directum  1  2  3   L. Trool
  Closterium ehrenbergi   1   2   3   4   Lochan an Daimh
L.Dhomhnaill
  Closterium gracile  1  2   3   4   L. Ruime
Kindrogan pond
L.Conailbhe
L.Dhomhnaill
  Closterium gracillimum 1   Loch Gearach
  Closterium idiosporum 1 2  3   L.Conailbhe
Lily Loch
R. Yarrow
  Closterium incurvum 1   L.Conailbhe
  Closterium intermedium  1   2   3   4   Hidden Lochan
L.Conailbhe
  Closterium jenneri   1   L.Conailbhe
  Closterium juncidum  1   2   3 4   L.Conailbhe
L. Chon
Camphill Resr.
R. Creran
Bemersyde
  ?Closterium juncidum v. elongatum 1  2   Bemersyde 
  Closterium kutzingii  1   2   3  4  5   6  7   L.Conailbhe
L. Skeen
R. Creran
Loch Gearach
Lily Loch
  Closterium lebleinii  1  2    Bemersyde
  Closterium littorale  1   L. Chon
  Closterium lunula   1  2  3  4  5   L. Chon
L. Trool
  Closterium moniliferum 1  2 3  4  5  6  7 8  9   Camphill resr.
Millport
Bemersyde
Lower L. Glenastle
R. Yarrow
Nepal
 
  Closterium navicula   1   2   3  4   L. Chon
Camphill resr.
Loch Gearach
  Closterium ? parvulum  1  2 3   Lochan an Daimh
R. Creran
  Closterium praelongum  1     Kindrogan pond
  Closterium ralfsii  1 2 3   L.Conailbhe
  Closterium setaceum  1  2   L. Tallant
L. Chon
Loch an Eilein
  Closterium striolatum  1  2  3     L. Ruime
L. Chon
L. Conailbhe
Loch an Eilein
  Closterium venus  1   L.Dhomhnaill
       
  Coccomyxa confluens  1   2  3  4  5 Chlorophyte: cells approx. 3 x 5µm, in pairs within a lamellated sheath greenhouse
       
  Cocconeis pediculus Diatom: usually found attached to surfaces such as aquatic plants or other algae R. Yarrow 
 
  Coelastrum  1   2   3  4   5  ?6 colonial (coenobium) Chlorophyte: hollow ball of cells joined by processes of the cell sheaths L. Tallant
Millport
Bemersyde
  Coelastrum pseudomicroporum   1 Ardnave L.
  ? Coelastrum sphaericum   1  2  3  4  5  6  7 Millport
Loch Gearach
 
  Coelosphaerium  1  2  3   4  5  colonial Cyanobacterium: spherical colony with cells clustered in a layer at the outside, not at the ends of stalks but may have their own sheath (cf. Woronichinia and Snowella) L. Tallant
Millport resr.
 
  Coenochloris fottii  
1
  2  3  4  5  6  7  8  9  10  11
colonial Chlorophyte (coenobium): spherical cells regularly arranged in a colonial mucilage sheath, without pseudocilia; reproduce by autospores which may remain in mother cell wall for a time: this description is the same as Sphaerocystis; there is doubt about whether these genera are different. L. Chon
Millport
 
  Coenococcus planctonicus 1  2  3  4  5  6   7 "microscopic colonies of 4-8-16-32-(64) celled groups in dense tetrads in an ellipsoid, spherical or irregularly shaped mucilage envelope with clearly delimited outline; cells 5.5-8-(10)µm smooth-walled, chloroplast cup to goblet shaped with single large pyrenoid, reproduces by autospores, 2-4-8 in each sporangium." (FAFBI) L. Chon
Millport
Loch an Eilein
  Coenococcus polycocccus ? 
1  2   3  4  5  6  7  8  9   10  11   12  13   14   15
cells sometimes in wreath-shaped groups of 8-32 in a spherical mucilage envelope

Millport
L.Conailbhe
Loch an Eilein

 
  The genus Coleochaete, with descriptive notes.   colonial Chlorophyte: forming either a disc, a hemisphere or a short, sparsely branched filament, some cells with sheathed setae.  
  Coleochaete irregularis1 branched filament Shewington
  Coleochaete irregularis1 2 branched filament. Diffuse outline to cells Shewington
  Coleochaete ? orbicularis   1 pseudoparenchymatous disc, smaller cells than C. scutata Shewington
  Coleochaete pulvinata  1 2   3  4   5   6   7  8 hemispherical colony composed of upright, branching filaments L. Gorm
Loch an Eilein
  Coleochaete scutata 1 2 colony composed of branches fused together in a pseudoparenchymatous disc Shewington
  Coleochaete soluta 1 2  3  4
disc composed of loosely spreading branches Kindrogan Pond
Lily Loch
 
  Coleodesmium wrangelii 1  2  3   filamentous cyanobacterium: multiple filaments with basal heterocysts within a common sheath. Strathyre
       
  Cosmarium (link to illustrated list) unicellular Desmid: semicells rounded with simple or decorated margins  
  Cosmarium abbreviatum  1  2  3   4   L. Connailbhe
L.Chon
Kilchiaran L.
Shewington
  Cosmarium ?bioculatum  1  2  3   Loch Gearach
R. Creran
  Cosmarium biretum  1   Millport
  Cosmarium blyttii   1  2  ?3 4   L. Chon
R. Creran
Camphill reser.
  Cosmarium botrytis 1 2 3 4 5   6   SCO330
L. Gorm
Loch an Eilein
R. Yarrow
  Cosmarium botrytis v.mediolaeve  1   L.Dhomhnaill
  Cosmarium ? brebissonii   1  2  3  4   Lochan an Daimh
R. Creran
Lily Loch
  Cosmarium contractum v. ellipsoideum 1   L.Dhomhnaill
  Cosmarium crenatulum 1  2  3   4  5  6   L.Dhomhnaill
Bemersyde
  Cosmarium crenatum  1   SCO067
  Cosmarium ? cyclicum v. arcticum 1   R. Creran
  Cosmarium depressum  1 2 3   SCO140
L.Dhomhnaill
  Cosmarium depressum v. achondrum  1   L. Tallant
  Cosmarium depressum v. planctonicum  1  2  3 4   L. Fada
L. Chon
lower L. Glenastle
  Cosmarium fontigerum 1  2   L.Dhomhnail
  Cosmarium formulosum 1  2  3  4  5   Loch Conailbhe
R. Creran
  Cosmarium granatum   1     Lochan an Daimh
  Cosmarium humile  1   2   3   4  5     L. Ruime
Shewington
L. Fada
L.Dhomhnail
  Cosmarium impressulum  1   2  3   4   L. Fada
lower L. Glenastle
Loch Gearach
R. Creran
  Cosmarium margaritiferum  1   SCO172
  Cosmarium ?meneghinii 1  2   Bemersyde
Lily Loch
  Cosmarium moniliforme   1   2   L. Kinardochy
  Cosmarium monomazum  1   L. Tallant
  Cosmarium ovale 1   lower L. Glenastle
  Cosmarium portianum   1   2  3  4  5 6   L. Conailbhe
Loch an Eilein
  Cosmarium punctatulum  1   2  3  4  5   Ardnave L.
lower L. Glenastle Camphill resr.
R.Creran
  Cosmarium pygmaeum  1  2   3  4  5   Kilchiaran L.
  Cosmarium quadratum  1   SCO330
  Cosmarium quadrifarium  1   lower L. Glenastle
  Cosmarium ralfsii   1   L. Chon
  Cosmarium ralfsii v.montanum  1  2   L.Dhomhnaill
R Creran 
  Cosmarium reniforme   1  2   3  4   SCO330
L.Dhomhnaill
Lily Loch
  Cosmarium reniforme v. compressum 1   R.Ettrick
   Cosmarium speciosum 1   R Creran
  Cosmarium speciosum v. rostafinskii  1 2   R.Yarrow
  Cosmarium subcostatum  1 2 3  4   Millport
L. Gearach
Bemersyde
Nepal
  Cosmarium subcrenatum  1  2   Shewington
  Cosmarium turpinii  1  2   Millport
lower L. Glenastle
  Cosmarium turpinii v. podolicum 1    Loch Ballygrant
Lily Loch
  Cosmarium venustum  1   Kilchiaran L.
 
  Cosmocladium saxonicum  1  2  3 4  5  colonial desmid in a spherical mucilage sheath; cells similar to Cosmarium, linked by threads of mucilage. L. Conailbhe
L. Chon
Loch an Eilein
Loch Trool
 
  ?Craticula ambigua  1  2 diatom Bemersyde
  Craticula cuspidata  1   2  3 diatom Bemersyde
       
  ? Crucigenia   1   2
? Crucigenia fenestrata  1   2
? Crucigenia tetrapedia  1
colonial Chlorophyte (coenobium) with oval cells in groups of 4 arranged cruciately, forming a flat plate. Reproduces by autospores, 2 or 4 from each mother cell, oriented at 45° to mother cell

Shewington
Ardnave L.
Millport
Loch Gearach
R. Ettrick

 
  Crucigeniella  1   colonial Chlorophyte (coenobium), differs from Crucigenia in that daughter cells are in same position as mother cell L. Gorm
  Crucigeniella crucifera 1  2   Loch Gearach
  Crucigeniella recta  1  2   Loch Gearach
  Crucigeniella rectangularis  1  2  3  4     Ardnave L
 
   Cryptomonas marssonii 1 flagellate Bemersyde 
       
  Cylindrocapsa  1   filamentous Chlorophyte, cell shape varies from cylindrical to elliptical, in a thick, stratified sheath, chloroplast variable; axile, stellate or parietal filling cell. Shows sexual reproduction, forms dark green spherical oogonia. May be bi-or multi-seriate. SCO067 
 
  Cylindrocystis   1   unicellular Chlorophyte (Saccoderm Desmid): cells short, cylindrical with rounded ends, with 2 stellate chloroplasts. Stac Pollaidh
       
  Cymatopleura elliptica   1  2   3   4 Diatom Bemersyde
Millport
  Cymatopleura solea  1  2 Diatom Bemersyde
       
  Cymbella aspera 1  2 Diatom, curved dorsal margin, ventral margin straight (C.cymbiforme), concave or with a central inflation. Cells motile Bemersyde
Camphill reser.
  Cymbella cymbiforme 1 (valve view) 2 Douglas Water
R. Yarrow
  Cymbella lanceolata  1  2  3  4 Millport
R. Yarrow
Nepal
     
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[ALGALWEB CONTENTS]  

John Kinross