Some new taxonomic characteristics applied to Stichococcus bacillaris (Chlorophyceae)

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Abstract
The genus Stichococcus was distinguished from the genus Klebsormidium with difficulty. Small unicellular algae with bacilliform to oblate morphology are confused with members of the genus Stichococcus. A number of algal strains that were either taxonomically related or morphologically similar to this genus were examined. These algae are characterized by patterns of organic solute accumulation during salinity stress. Growth and morphological responses to salinity in culture and aspects of cell wall composition supplement criteria based on solute accumulation. The genus Stichococcus Naegeli is easily distinguished from Klebsormidium Silva, Mattox and Blackwell and other algae based on this evidence. It is proposed that K. marinum be merged with S. bacillaris and be reduced to a synonym of S. bacillaris.