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Hormoscilla

Generic name: HORMOSCILLA Anagnostidis et Komárek, 1988. Algolog. Stud. 50-53: 425.
Synonyms:
Diagnosis:
Type species: Hormoscilla xishaensis (Hua) Anagnostidis et Komárek 1988.
Descriptions:
Komárek (1992): Filamentous; solitary, free-living trichomes or small groups of trichomes. Trichomes with a limited growth, more or less short (up to 30 cells per trichome), rarely long with many cells (in cultures), up to 140 um long, 4-12 um wide, simple, isopolar, uniserial, unbranched, sheathless, straight, sightly irregularly waved or semicircular curved, not attenuated at the ends, constricted or unconstricted at the cross walls. Trichomes immotile, easily disintegrating into short segments (immotile
hormocytes). Cells always shorter than wide, rarely up to almost isodiametric, shortly cylindrical or barrel-shaped, end cells widely rounded, without aerotopes, thylakoids irregularly coiled, +/- perpendicularly situated to the longitudinal cell walls. Heterocytes and akinetes absent.
Genotype differences, molecular
data:
Reproduction strategies, life cycles, cell division:
Komárek (1992): Cell division crosswise, with all cells capable to divide. Reproduction by the division of trichomes, proceeding regularly by help of special sacrified cells like discs; trichomes disintegrate along the total length, sometimes up to solitary cells. Hormocytes germinate at both ends (isopolar).
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Oscillatoriales, Gomontiellaceae, Hormoscilloideae
Notes to taxonomy, misinterpretations:
Ecology, ecophysiology, ecological significance:
Komárek (1992): Two species are known from marine localities (epi- or endozoic in everte- brates) , one species was isolated from soil in England.
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:

List of species:
Hormoscilla endophytica (Li) Anagnostidis 2001
Hormoscilla feldmannii Anagnostidis 2001
Hormoscilla fragmentosa Komárek et Komárková-Legnerová 2005
Hormoscilla pringsheimii Anagnostidis et Komárek 1988
Hormoscilla spongeliae (Schultze ex Gomont) Anagnostidis et Komárek 1988
Hormoscilla xishaensis (Hua) Anagnostidis et Komárek 1988

Unclear taxa:
 Borzia saxicola (Filaszki) Li 1998

Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

  2.1 taxonomy: Feldmann 1958, Hua 1981, Berthold et al. 1982, Anagnostidis & Komárek 1987, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: