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Fischerellopsis

Generic name: FISCHERELLOPSIS Fritsch, 1932. J. Bot. 70: 129.
Synonyms:
Diagnosis:
Type species: Fischerellopsis harrisii Fritsch 1932
Descriptions:
Komárek (1992): Filamentous - thallous; filaments single or in fascicles, arranged parallel or coiled within a common gelatinous, diffluent mass, enveloped by their own, fine sheaths, with common, lateral true-branchings (T-type), uniserial, rarely multiserial, with club-shaped ends of trichomes and branches. Branches arise after the lengthwise cell division in main trichomes, sometimes very commonly; they are long or short (in the latter case they change completely in hormogonia), with diffluent, fine sheaths. Trichomes usually constricted at cross-walls, with barrel-shaped cells, isodiametric or shorter or longer than wide. Occasionally occurs false branching. Heterocytes solitary in main filaments and in long branches, short. Akinetes develop solitary, rarely, in main creeping trichomes, subspherical.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992):Reproduction by hormogonia, which are usually club-shaped (clavate), cylindrical or only slightly constricted at cross-walls, with cells morphologically distinguishable from cells in trichomes, sometimes with aerotopes; the whole short branches, or ends of long branches (like in Fischerelm species) change usually in hormogonia. Hormogonia escape from the ends of sheaths.
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Stigonematales, Fischerellaceae
Notes to taxonomy, misinterpretations:Two or three species; generic position and generic features need revision.
Ecology, ecophysiology, ecological significance:
Komárek (1992):Tropical species, living submersely in clear water biotopes and subaerophytic on wet rocks.
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:
Fischerellopsis harrisii Fritsch, 1932
Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

  2.1 taxonomy: Fritsch 1932, Geitler 1942, Desikachary 1959, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: