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When Will Taxonomic Saturation Be Achieved? A Case Study In Nunduva And Kyrtuthrix (Rivulariaceae, Cyanobacteria)1, Jeffrey R. Johansen, Laura Gonzalez-Resendiz, Viviana Escobar-Sanchez, Claudia Segal-Kischinevzky, Jose Martınez-Yerena, Joaquin Hernandez-Sanchez, Gariela Hernandez-Perez, Hilda Leon-Tejera
When Will Taxonomic Saturation Be Achieved? A Case Study In Nunduva And Kyrtuthrix (Rivulariaceae, Cyanobacteria)1, Jeffrey R. Johansen, Laura Gonzalez-Resendiz, Viviana Escobar-Sanchez, Claudia Segal-Kischinevzky, Jose Martınez-Yerena, Joaquin Hernandez-Sanchez, Gariela Hernandez-Perez, Hilda Leon-Tejera
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A number of heterocytous, mat-forming, tapering cyanobacteria in Rivulariaceae have recently been observed in both the Atlantic and Pacific coasts in the rocky intertidal and supratidal zones. These belong to the genera Nunduva, Kyrtuthrix, and Phyllonema and have been the subject of several recent studies. Herein, two new species of Nunduva (N. komarkovae and N. sanagustinensis) and two new species of Kyrtuthrix (K. munecosensis and K. totonaca) are characterized and described from the coasts of Mexico. Genetic separation based on the 16S-23S ITS region was pronounced (>10% in all comparisons). Morphological differences between all existing species in these two …