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Aulacoseira granulata

caption Aulacoseira granulata var. angustissima– a filamentous centric diatom, a thin variant of the much more common type A. granulata. Cells usually < 5 um diameter as opposed to 9-16 um for the type. Another indicatory feature is that the points decorating the valve are hardly seen in this variety. Very rare in Lake Kinneret in recent years.
author aalster and tzohary
copyright A Alster & T Zohary, Kinneret Limnological Laboratory, IOLR
observation details click here
image notes Photo taken with an Olympus BX50 Microscope equipped with DIC optics and PixeLink digital camera, mag. X40
image sets   Lake Kinneret planktonic life forms