Achnathidium pseudopusillum (Bacillariophyta), a New of Diatoms for Science

The study of algological material from tundra lakes located in the vicinity of the Lena Delta Wildlife Reserve (Yakutia) using scanning electron microscopy revealed a new species of diatoms for science Achnanthidium pseudopusillum sp. nov. The new species has morphological similarities with other species of the genus A. pusillum, but different from him, smaller valve width, large values of the number of striae in 10 microns, a smaller number of areolae in the striae in the middle part of the valve.