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Geitleria

Generic name: GEITLERIA Friedmann 1955. Bot. Notiser 108: 444.
Synonyms:
Diagnosis:
Type species: Geitleria calcarea Friedmann 1955
Descriptions:
Komárek (1992): Filamentous - thallous; thallus loosely tufted, up to 2 mm thick, with coiled, creeping or erected filliments, irregularly laterally and pseudodichotomously true branched (V- and T-branching types), without prostrate basal system and without morphological differentiation into main and lateral branches. Sheaths firm, intensely lime-incrusted, colourless , containig a single trichome. Trichomes uniserial, moniliform, indistinctly or intensely constricted at cross-walls.
Cells cylindrical or barrel-shaped, sometimes with own, narrow special envelopes and granular, pale greyish-green content, with distinct chromatoplasma and solitary granules; end cells sometimes slightly widened-rounded. Thylakoids distributed over the whole cell content. Heterocytes and akinetes absent.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992): Cell division crosswise or lengthwise (before true branching). Reproduction by hormogonia (fractured segments of filaments).
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Stigonematales, Loriellaceae
Notes to taxonomy, misinterpretations: Two species.
Ecology, ecophysiology, ecological significance:
Komárek (1992): Aerophyiic, epilithic on calcareous rocks in caves. The type species is distributed probably worldwide (Israel, France, Roumania, Spain, Yugoslavia, USA, Cook Islands), but very distinct, only under very special ecological conditions (caves of a special- character, in deepest and least illuminated areas of the photic zone); the second species, G. floridana, grows under simi1ar conditions, but known only from the USA (Florida).
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:

Geitleria calcarea Friedmann 1955
Geitleria floridana Friedmann 1979
Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

  2.1 taxonomy: Friedmann 1955, Friedmann 1979, Bourrelly 1970, Bourrelly et Dupuy 1973, Coute 1982, Coute 1985, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: