NEW AND RARE FOR RUSSIA SPECIES OF THE GENUS PLEUROTAENIUM (CHAROPHYTA, ZYGNEMATOPHYCEAE)
Lubov A. Medvedeva1, Aliya F. Luknitskaya2
1Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the RAS, Vladivostok, Russia
2Komarov Botanical Institute of the RAS, St. Petersburg, Russia
Keywords: Charophyta, Zygnematophyceae, Pleurotaenium, desmids, Far East, Russia
Abstract
Data on four species of the genus Pleurotaenium Nägeli found by us in water bodies of the southern part of the Russian Far East have been published. Rare taxa P. subcoronulatum var. detum and P. caldense var. cristatum were recently discovered by us in the Bastak Nature Reserve (Jewish Autonomous Region). P. cylindricum var. stuhlmannii and P. verrucosum are recorded for the Russian Federation for the first time. The diagnoses of species based on our material, information about the location of species and their distribution are given. According to the available literature data, the species and varieties of the genus Pleurotaenium that we found are most often occur in South America (in particular, Brazil) and East Asian countries. Apparently, the presence of the species of the genus that we discovered indicates the proximity of the flora of desmid algae in the southern regions of the Russian Far East to the East Asian region. The data obtained make it possible to supplement and expand information on the distribution of desmids and representatives of the genus Pleurotaenium in Asia.
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