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physiology

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The population of an unknown naviculoid diatom from Lake Vrana in Croatia was identified as Navicula hedinii, a species described in 1922 from a small lake in eastern Turkestan (China). This species has some similarities with Navicula pseudocrassirosrris, a marine srecies found in European coastal waters. Based on tne ultrastructure of the two species, they can no longer be included within the taxonomical concept of Navicula sensu stricto. following a comparative morphological analysis of both species with genera bearing similar characters (Adlafia, Veigaludw'igia, Kobayasiella, Cavulina, Stenoneis, Climaconeis, Berkeleya, Stellaphora, Cosmioneis), a new genus, Envekadea is proposed for the two species, The new genus is characterized by a sigmoid raphe course with golfclub-like terminal fissures deflected in opposite directions, the areolae covered by external porous hymenes and the presence of one chloroplast, H-shaped in valve view

BR Staff Publications [a] (paper in international, peer reviewed journal)

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ECO Ecology --- ecology --- vegetation ecology --- floristics --- biome --- pollution --- phytosociology