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Raphidiopsis

Generic name: RAPHIDIOPSIS Fritsch et Rich, 1929. Trans. Roy. Soc. South Africa 18: 91.
Synonyms:
Diagnosis:
Type species: Raphidiopsis curvata Fritsch et Rich 1929
Descriptions:
Komárek (1992): Trichomes solitary, free floating, without sheaths and gelatinous envelopes, straight, waved or screw-like coiled, isopolar, uniserial, usually slightly attenuated toward both ends (or to one end after trichome disintegration), but not elongated in cellular hair-like ends, constricted at cross-walls. Cells barrel-shaped, sometimes slightly elongated to the ends, facultatively with gas vesicles (aggregated in aerotopes); apical cells conical-rounded or pointed. Heterocytes missing. Akinetes develop in the middle of trichomes in series.
Genotype differences, molecular
data:
Reproduction strategies, life cycles, cell division:
Komárek (1992): Reproduction by disintegration of trichomes.
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Nostocales, Nostocaceae, Anabaenoideae
Notes to taxonomy, misinterpretations:
Ecology, ecophysiology, ecological significance:
Komárek (1992): Only planktic, freshwater species, sometimes forming slight water blooms, several species occur only in geographically limited areas (tropical species, China, etc.).
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:

List of species:
Raphidiopsis brookii Hill 1972
Raphidiopsis curvata Fritsch et Rich 1929
Raphidiopsis indica Singh 1942
Raphidiopsis longsetae Eberly 1966
Raphidiopsis mediterranea Skuja 1937
Raphidiopsis sinensis Jao 1951
Raphidiopsis tucomanica Kogan 1967

Unclear taxa:
Raphidiopsis curvata forma sensu Guarrera et al. 1968
Raphidiopsis setigera (Aptekar') Eberly 1966

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

  2.1 taxonomy: Fritsch & Rich 1929, Huber-Pestalozzi 1938, Jao 1951, Hindák 1987, Hill 1970, Hill 1972, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: