Home

Letestuinema

Cyano Database - Db of genera -Letestuinema

Generic name: LETESTUINEMA Frémy, 1930. Arch. Bot. 3: 390.
Synonyms:
Diagnosis:
Type species: Letestuinema gabonense Frémy 1930. - Two little known species.
Descriptions:
Komárek (1992): Thallous; thallus joined to the substrate, more or less hemispherical, macroscopic (up to 2 mm in diameter), gelatinous, firm, composed from more or less straight, polarized, branched, more or less erected filaments. Filaments situated more or less parallely and near one to another, radially oriented, with true branchings (V- type). Sheaths colour less in young filaments, later yellow to brown, thick, lamellated. Trichomes uniserial, composed from barrel-shaped, mainly isodiametric cells. Heterocytes very rare, intercalar.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992): Reproduction by nanocytes and monocytes (probably immotile), which arise at the ends of branches; monocytes differentiate usually in rows. Hormogonia and akinetes not known.
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Stigonematales, Capsosiraceae
Notes to taxonomy, misinterpretations:
Ecology, ecophysiology, ecological significance:
Komárek (1992): Sessile, epilithic and on shells of molluscs in streaming waters in tropical countries (equatorial Africa).
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:
Letestuinema gabonense Frémy 1930
Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

  2.1 taxonomy: Fremy 1930,
Geitler 1932, Geitler 1942, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: