From the algae culture SAG (Goettingen, Germany), No 1224-5/25 (http://sagdb.uni-goettingen.de/detailedList.php?str_number=1224-5/25). Sample material courtesy of AG Boenigk, University Duisburg-Essen. This image was taken using Zeiss Axioplan with DSLR Canon 600D.

For permission to use of (high-resolution) images please contact postmaster@protisten.de.
Wolfgang Bettighofer, www.protisten.de.