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Portrait of Pediastrum duplex (Meyen, 1829 ).Collected from a freshwater pond near Boise, Idaho. Phase contrast.
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Portrait of Pediastrum duplex (Meyen, 1829 )demonstrating tufts of bristles protruding from the notch at the ends of the horns of peripheral cells (seen most clearly at one o'clock and 7 o'clock here). These bristles are thought to consist of proteinaceous microfilaments (see Scnepf,E. et al. J. Ultrastruct. Res. 72:367-379,1980). These nonmotile bristles may play a role in orienting the coenobia in the water column . DIC.
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Pediastrum duplex is a common chlorophyte (Chlorococcales) of Lake Kinneret, relatively more abundant in winter, especially in âNo-Peridinium yearsâ. This specimen was collected at the shore by the Kinneret Limnological Laboratory in June 2006