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Homoeoptyche

Generic name: HOMOEOPTYCHE Skuja, 1944. Acta Horti Bot. Univ. Riga 14: 53.
Synonyms: THACKERELLA Bharadwaja, 1963. Proc. Ind. Acad. Sci. 57, b4: 254.
Diagnosis:
Type species: Homoeoptyche repensSkuja 1944. - Monospecific genus.
Descriptions:
Komárek (1992):Thallous; thallus composed from haevily pseudodichotomously ramified, heteropomr, more or less creeping fimments. Trichomes uniserial, torulous, with numerous short true branches, not morphologically diversified from main trichomes (V- and T- type of branching); sheaths firm, thin, limited, waved at the surface, colourless, not lamellated, not gelatinizing, only at the end (around hormogonia) slightly lamellated and telescopic; trichomes and branches from dense agglomerations, but not confluent by sheath sides. Cells irregularly subspherical or barrel-shaped, connected in trichomes by pit-connections. Heterocytes and akinetes not observed.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992): Cells divide cross-wise, sometimes a little oblique and irregular, or length-wise before branching. At the ends of branches develop terminal hormogonia, liberating from sheaths through the apical opening. Hormogonia uniserial, composed from short cells, intensely constricted at cross walls.
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Stigonematales, Stigonemataceae
Notes to taxonomy, misinterpretations:
Ecology, ecophysiology, ecological significance:
Komárek (1992): Epiphytic on the rhodophycean alga Sterrocladia, still known only from Guayana.
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:
Homoeoptyche repens Skuja 1944
Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

  2.1 taxonomy: Skuja 1944, Bourrelly 1970, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: