Alternantia
| Generic name: ALTERNANTIA Schiller, 1954. Oesterr. Acad. Wiss., Math.-Nat. Kl., Sitzungsber., Abt. 1, Biol. 163: 134. | ||||||||||
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| Diagnosis: | ||||||||||
| Type species: Alternantia ramifera Schiller, 1954.- Five unsufficiently described species. | ||||||||||
| Descriptions: Komárek (1992): Unicellular - colonial; elongated cells are arranged serially into rows and pseudofilamentous colonies, and oriented by their longer axis parallely to the long axis of a colony, but shifted a little aside one to another; colonies are simple or pseudo- dichotomously branched. Sheaths (envelopes) around the rows of cells are wide, colourless, structureless, sometimes slightly diffluent at the margin. Cells rod-like, more or less rectangular with cut ends, usually a little distant one from another, with pale blue-green (or greyish) content. |
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| Genotype differences, molecular data: | ||||||||||
| Reproduction strategies, life cycles, cell division: Komárek (1992): Cell division not described, probably by the cross-wise fission of elongated cells; reproduction probably by the disintegration of a colony. |
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| Ultrastructure: | ||||||||||
| Taxonomic position, higher hierarchy: Cyanophyceae, Chroococcales, Synechococcaceae, Synechococcoideae Notes to taxonomy, misinterpretations: |
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| Ecology, ecophysiology, ecological significance: Komárek (1992):All 5 species were described from one polluted concrete basin near Vienna (Austria), and they were not proved again. Very unclear genus, maybe bacteria. |
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| Physiology and biochemistry: |
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| Distribution, endemism, problematic citations: |
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| Reference strain: |
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| Infrageneric scheme, species concept: |
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| List of species: Alternantia ramifera Schiller, 1954 |
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| List of stains: | ||||||||||
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Drawings: Komárek (1992)
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Literature:
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