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Richelia

Generic name: RICHELIA J. Schmidt in Ostenfeld et J. Schmidt 1901. Vidensk. Meddel. Dansk Naturhist.Foren. København, p. 146.
Synonyms:
Diagnosis:
Type species: Richelia intracellularis J. Schmidt 1901
Description:
Komárek (1992): Trichomes solitary, short, few-20-celled, straight or slightly arcuated, more or less cylindrical along the whole length, without sheaths or gelatinous envelopes, isopolar, slightly constricted at cross-walls. Cells diametric or shorter than wide, blue-green. Heterocytes more or less spherical, develop terminally, on one or (later) on both ends; they are sphe- rical, wider than vegetative cells. Akinetes missing.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992):Cells divide crosswise. Reproduction by disintegration of trichomes, typical hormogonia not observed
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Nostocales, Nostocaceae, Anabaenoideae
Notes to taxonomy, misinterpretations:
Ecology, ecophysiology, ecological significance:
Komárek (1992):Marine, endophytic within cells (intracellular) or rarely epiphytic (on the surface of frustules) of oceanic, planktic Diatoms (Rhizosolenia, Hemiaulus, Chaetoceros, etc.), mainly in warm, tropical seas.
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:
Richelia intracellularis J. Schmidt 1901
Keys:
List of stains:
Drawings:

Schmidt 1901, sec. Geitler
1942

Application technology:
Literature:

  2.1 taxonomy: Geitler 1942, Kosinskaja 1948, Desikachary 1959, Umezaki 1961, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: