Multilayer image (DOF)
Valvar view. Insets showing marginal ring of labiate processes (upper right) and the hyaline central area (lower left). Scale bar indicates 100 µm.
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Sample from North Sea near Heligoland (spring diatom bloom). The image was built up using several photomicrographic frames with manual stacking and stitching technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
This image was taken by Wolfgang Bettighofer. Image copyright by Wolfgang Bettighofer (www.protisten.de); image used under license to MBL.
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From the collection
Limnic and marine Protists of Northern Germany and the Alps
|Description of Coscinodiscus wailesii: Cells are often as high as wide. Cells are rectangular in outline or with an undulating margin, depending on the focal plane. In girdle view a prominent hyaline area is visible at the centre of the valve with wide interstriae radiating from it, resulting in an irregular fasciculation, 5-6- valve areolae are present in 10Ã‚Âµm. Areolae are small but cribra are still visible with the light microscope. there are two marginal rings of processes. The outer ring contains two larger rings of processes that are 120-180 degrees apart. Chloroplast shape is irregular. |