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Name derivation:

 

 

Classification:

Glenodinium  Ehrenberg  1836;  22 of 152 species descriptions are currently accepted taxonomically (Guiry and Guiry 20123)

 

Order Peridiniales;  Family Peridiniaceae

Synonym of G. cinctum (type species):  Sphaerodinium cinctum  Wolozyńska  1916.

Synonym of G. foliaceum:  Kryptoperidinium foliaceum  (F. Stein) Lindemann

The genus is likely polyphyletic (Lewis and Dodge 2011).

 

Morphology:

Ovoid unicells with delicate cellulose wall plates difficult to see with light microscopy (Lewis and Dodge 2011).  Several chloroplasts. Cinctum offset ~ 1 cinctum width and extends to pole of hypotheca (‘south pole’).

 

Similar genera:

Peridinium looks similar under the light microscope, but generally has heavier cellulose plates.

 

Habitat:

Global, freshwater and marine plankton.

 

References:

Ehrenberg, C.G.  1836.  Zusätze zur Erkenntniss grosser organischer Ausbildung in den kleinsten thierischen Organismen.  Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1835: 150-181.

Guiry, M.D. and G.M. Guiry  2013.  AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.  http://www.algaebase.org; searched on 08 February 2013.

Lewis, J.M., and J.D. Dodge  2011.  Phylum Dinophyta (Dinoflagellates).  In:  John, D.M., B.A. Whitton and A.J. Brook (Eds.).  The Freshwater Algal Flora of the British Isles, 2nd edition.  Cambridge University Press (878 pp.).