Micrasterias americana shows a very special morphological phenomenon. The four minor processes of apical lobes are optional. But if some of them are formed they show rotational symmetry according to direction of the appendices. This depth of focus picture assembling 14 high resolution shots showes a specimen with one appendix formed.
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Sample from spagnum pond situated in the northern alpine region of Austria near Salzburg. 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
No description of Micrasterias americana available.
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