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Westiella

Generic name: WESTIELLA Borzì 1907. Atti Congr. Nat. Ital. 1906: 373.
Synonyms:
Diagnosis:
Type species: Westiella intricata Borzì 1907
Descriptions:
Komárek (1992): Filamentous- thalous; thallus composed from free, irregularly coiled, creeping, intensely laterally true branched filaments. Trichomes always uniseriate, morphologically not diversified in "main" filaments and branches, .cylindrical, not constricted at cross walls, of the same width, only little attenuated to the ends of branches; terminal cells rounded; true branching of the T-type. Sheaths thin, firm, homogeneous, not lamellated, colourless (only walls of hormocysts are yellowish-brown).
Cells blue-green, with solitary granules, usually longer than wide. Heterocytes intercalar, solitary, cylindrical. Akinetes not well known and described.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992): Cell division only crosswise to the trichome axis. Reproduction by hormogonia, which separate by help of necridic cells from ends of branches and obligatory by 2-12-celled hormocysts, which can develop serially at the terminal parts of branches.
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Stigonematales, Mastigocladaceae, Mastigocladoideae
Notes to taxonomy, misinterpretations:
Ecology, ecophysiology, ecological significance:
Komárek (1992): One species is atmophytic, growing near thermal springs in volcanic areas of South Italy (island Pantelleria), second species described from tropical soils.
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:

Westiella intricata Borzì 1907
Westiella lanosa Frémy 1924
Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

  2.1 taxonomy: Frémy 1930, Geitler 1932, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: