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Cyanoderma

Generic name: CYANODERMA Weber van Bosse 1887. Nat. Verh. Holl. Maatsch. Wetensch. Haarlem, ser. 3, 5: 18
Synonyms:
GEITLERIELLA De Toni, 1936. Noter. Nomencl. Algol. 8: 5.
NEMATORADAISIA Geitler, 1925. Beih. Bot. Centrabl. 41 (2): 242
RADAISIELLA Geitler, 1925. Beih. Bot. Centralbl. 2, 41: 242.
Diagnosis:
Type species:Cyanoderma bradypii (Kuhn in Welcker) Weber van Bosse, 1887. Nat. Verh. Holl. Maatsch. Wetensch. Haarlem, ser. 3, 5 [syn: Pleurococcus bradypii Kuhn in Welcker 1866 = Cyanoderma bradypodis (Kuhn in Welcker) Weber van Bosse, 1887 - orthogr. mut.
Geitleriella subimmersa (Setchell et Gardner) De-Toni, 1936
Descriptions:
Komárek (1992, sub Geitleriella): Unicellular - colonial; thallus in outline circular, attached to the substrate (red marine algae), composed from basal, discoid, blastoparenchymatous layer of cells and from more or less parallely oriented, erected short, straight, not divaricated and fasciculated pseudofilaments, each enveloped by its own thin and firm sheath; pseudofilaments are free, not confluent by their sides (sheaths) together. Cells irregular, in pseudofilaments elongated and at their ends widened, more or less spherical, blue-green.
Geitler (1932, sub. Nematoradaisia): Thallus in Sohle und aufrechte Fäden gegliedert. Sohle mehr oder weniger kreisförmig, aus kriechenden, radiär ausstrahlenden, dichotom (oder scheindichotom ?) verzweigten Fäden bestehend. Aufrechte Fäden kurz, gerade, parallel, unverzweigt, mit festen Membranen, seitlich nicht miteinander verwachsen. Sporangien terminal an den aufrechten Fäden. Endosporen durch simultane Teilungen gebildet.
Geitler (1932, sub. Radaisiella): Thallus in Sohle und aufrechte Fäden gegliedert. Sohle mehr weniger kreisförmig, blastoparenchymatisch. Aufrechte kurz, gerade, unverzweigt, büschelig angeordnet, mit Membranen, seitlich nicht miteinander verwachsen, äjien terminal an den aufrechten Fäden.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992, sub Geitleriella): Cell division in different planes in the basal parts of thallus, later in pseudofilaments cross-wise, perpendicularly to the axis of pseudofilaments. The apical spherical cells divide into nanocytes. Reproduction by liberated nanocytes.
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Chroococcales, Hyellaceae, Hyelloideae
Notes to taxonomy, misinterpretations: 
Ecology, ecophysiology, ecological significance:
Komárek (1992, sub Geitleriella): The only species was described fromthe marine littoral of California (U.S.A.), where it grows epiphytically on the red alga of the genus Rhodymenia. This species destroys the surface cell layers of the host alga. A little known genus, its delimitation from Nematoradaisia is unclear.
Physiology and biochemistry:
Distribution, endemism, problematic
citations:
Reference strain:
Infrageneric scheme, species
concept:
List of species:
Cyanoderma bradypii (Kuhn in Welcker) Weber van Bosse 1887
Cyanoderma laminariae (Setchel et Gardner) Komárek et Anagnostidis 1995
Cyanoderma lineare (Setchel et Gardner) Komárek et Anagnostidis 1995
Cyanoderma subimmersum (Setchel et Gardner) Komárek et Anagnostidis 1995

Unclear taxa:
Nematoradaisia gasteropodum Gonzalez Guerrero 1947<

Keys:
List of stains:
Drawings:
Komárek
(1992), sub Geitleriella
Application technology:
Literature:

  2.1 taxonomy: Setchell & Gardner 1918, Geitler 1932, Geitler 1942, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: