TY JOUR TI MORPHOLOGY AND TAXONOMY OF THE RARE SPECIES NUPELA SILVAHERCYNIA (LANGE-BERTALOT) LANGE-BERTALOT (BACILLARIOPHYTA) KW Republic of Karelia KW Lake Pizanets KW Bacillariophyta KW Nupela silvahercynia KW N. vitiosa KW electron microscopy KW morphology KW taxonomy KW distribution JO Transactions of Papanin Institute for Biology of Inland Waters RAS AU Genkal, S.I. AU Komulaynen, S.F. PY 2023 IS 0 PB Papanin Institute for Biology of Inland Waters Russian Academy of Sciences