Abstract
Lately, several studies have confirmed the heterogeneity of the genus Phormidium, and some genera (Phormidesmis, Wilmottia, Oxynema) have been separated from this polyphyletic generic unit by polyphasic analysis. Accordingly, our objective is to carry out the molecular analysis of the Phormidium tropical strains based on sequences of the 16S rRNA gene and the 16S - 23S rRNA internal trans…