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Coelosphaeriopsis

Generic name: COELOSPHAERIOPSIS Lemmermann, 1900. Abh. Nat. Ver. Bremen 16: 352.
Synonyms:
Diagnosis:
Type species:Coelosphaeriopsis halophila Lemmermann, 1900
Descriptions:
Komárek & Anagnostidis (1998): Colonies microscopic, more or less spherical, up to 500 um in diameter, freeliving, enveloped by colourless, fine, homogeneous mucilage. Cells spherical or oval before division, situated more or less in the colonial periphery in one layer, each surrounded by its own, narrow, delimited gelatinous envelope, with more or less homogeneous or slightly granular content.
Komárek (1992): Unicellular – colonial; colonies microscopic, spherical or composed from several subcolones, free floating, enveloped by
mucilaginous, colourless, fine but more or less limited envelope, without any inner stalk system, with cells arranged peripherally in one layer, and "hollow" (?) in the centre. Cells spherical or slightly irregular elongated, usually surrounded by their own mucilaginous envelopes, sometimes of the unequal size, distant one from another, without aerotopes.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek & Anagnostidis (1998):Cell division by fission probably in two perpendicular planes in successive generations; reproduction probably
by disintegration of colonies.
Komárek (1992): Reproduction by “cell division” and "division of colonies".
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Chroococcales, Merismopediaceae, Gomphosphaerioideae
Notes to taxonomy, misinterpretations:Two not revised species
Ecology, ecophysiology, ecological significance:
Komárek (1992): Type species described from a lagoon on the island Laysan (Hawaii, USA), another one is not well described; the type species was not revised after the first description. Into this genus belongs possibly also Coelosphaerium chlamydocystis Skuja 1964.
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:
Coelosphaeriopsis chlamydocystis (Skuja) Komárek et Anagnostidis 1995
Coelosphaeriopsis halophila Lemmermann 1900
Keys:
List of stains:
Drawings:
Komárek (1992)
Application technology:
Literature:

  2.1 taxonomy: Geitler 1932, Geitler 1942,Skuja 1964(sub Coelosphaerium), Bourrelly 1970, Bourrelly 1985, Komárek 1992, Komárek & Anagnostidis 1998
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: