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Abstract
Ehrenberg's type specimen of Navicula sinensis is illustrated and discussed. The taxon was transferred to the genus Gyrosigma and assigned specific status as G. sinense in Desikachary (1988). Based on our examination of the type specimen we confirm this as correct. In particular, taxonomic studies on both the type and additional specimens from other habitats in marine localities lead us to reject the varietal status under G. balticum (Ehrenberg) Rabenhorst suggested in Cleve (1894). An emended species description is given and habitat information is added.