Nowe i rzadkie dla flory Polski gatunki okrzemek
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Taxonomic and ecological analysis of 21 diatom species was carried out. 13 of them have not been recorded in Poland until the present study; they are: Amphora montana Krasske, Navícula erifuga Lange-Bertalot, N. goeppertiana (Bleisch) H. L. Smith, N.joubaudii Germain, N. libonensis Schoeman, N. oppugnata Hustedt, N. novaesiberica Lange-Bertalot, N. recens (Lange-Bertalot) Lange-Bertalot, N. stroemii Hustedt, Neídíum bisculatum var. subamplialum Krammer, Pinnularia ignobilis (Krasske) Cleve-Euler, Stauroneis lauenburgiana Hustedt, St. wislouchii Poretzky & Anisimowa. 11 of these taxa (underlined) as well as Caloneis latiuscula (Kützing) Cleve and C. molaris (Grun.) Krammer are rare species for Polish and world diatom floras. 6 taxa have been described due to changes in their nomenclature introduced by Lange-Bertalot (1986, 1993), and new localities of their occurence in Poland are also given. These species are: Caloneis alpestris (Grun.) Cl., N. laterostrata Hust., N. rynchocephala Kütz., N. rynchotella Lange-Bertalot, N. subminuscula Manguin and Pinnularia stomatophora (Grun.) Cl.