UDK 582.296 Basidiolichenes
This electron microscopy study investigates morphological features of the shell of the diatom alga Semiorbis hemicyclus from Lake Pizanets (Republic of Karelia). Quantitative (valve length and width, number of striae) and qualitative (valve shape, position and structure of striae and raphe) characteristics are analyzed. Original and literature data make it possible to expand the diagnosis of this species.
Republic of Karelia, Lake Pizanets, Bacillariophyta, Semiorbis hemicyclus, electron microscopy, morphology
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