To morphology and taxonomy of Tabellaria flocculosa (Bacillariophyta)

• Main Authors: Genkal, S.I., Chekryzheva, T.A.
• Format: Report
• Language: unknown
• Published: Труды Института биологии внутренних вод РАН 2016
• Subjects: TABELLARIA FLOCCULOSA; T. FENESTRATA; T. QUADRISEPTATA; T. VENTRICOSA; T. PSEUDOFLOCCULOSA; MORPHOLOGY; TAXONOMY; RIVERS AND LAKES OF KARELIA; RUSSIA; МОРФОЛОГИЯ; ТАКСОНОМИЯ; РЕКИ И ОЗЁРА КАРЕЛИИ; РОССИЯ; karelia*
• Online Access: https://dx.doi.org/10.24411/0320-3557-2016-10034; https://cyberleninka.ru/article/n/to-morphology-and-taxonomy-of-tabellaria-flocculosa-bacillariophyta/pdf

This study of T. flocculosa/T. fenestrata complex in rivers and lakes of Karelia (Russia) has revealed a wide morphological variability of quantitative (valve length, central and terminal inflation widths, number of striae in 10 |am, number of rimoportulae per valve) and qualitative (shape of the valve and pseudoraphe, rimoportula arrangement, presence of spines) characteristics. A total of 26 morphotypes with different combinations of features, differing at least in one of 12 morphological characteristics, have been recorded. Based on original and literature data it is suggested to refer T. fenestrata, T. quadriseptata, T. ventricosa and T. pseudoflocculosa to the synonymy of T. flocculosa and extend the diagnosis of this species. New data on the morphology of T. fenestrata var. geniculata has been obtained. It is suggested to keep the taxonomic status of this form and broaden the diagnosis of the variety.