Freshwater Benthic Diatoms of Central Europe: Over 800 Common Species Used in Ecological Assessment. English edition with updated and added species. 2017. 3578 figs. on 135 plates. 942 p. gr8vo. Hardcover.(ISBN 978-3-946583-06-6)

The original German - language edition was published in 2013 as
'Diatomeen im Süßwasser - Benthos von Mitteleuropa. Bestimmungsflora Kieselalgen für die ökologische Praxis. Über 700 der häufigsten Arten und ihre Ökologie, by Gabriele Hofmann, Marcus Werum & Horst Lange-Bertalot, corrected edition 2013, edited by H. Lange - Bertalot.'

26 genera are included in the updated English edition of the book, whilst just in three cases genera that we included in the first (German) edition were removed (although they are still mentioned and briefly explained in the book). 10 species have been added to the book, 27 more have been mentioned under 'similar taxa', taxonomic concepts were clarified / updated for 36, and 39 were transferred from one genus to another.

The English edition is intended primarily as a tool to facilitate consistent and accurate identification of diatoms in central Europe. The present diatom flora consists of different identification keys, species profiles in alphabetical order, and photographic plates. A general key directs to the 110 genera included in the book. For species - rich genera keys to the species are provided. While using these keys one must remain being aware that this book covers only frequent and / or locally abundant species. It may thus well be that some of the species encountered are not included in the keys.

The lead editor updated the work to include the latest information on the taxonomy and ecology. Decisions on revisions were made following a very critical criterion: all taxonomy and ecology papers of which the authors were aware published until summer 2016 were considered, and all genera and species (if quantitatively relevant) were included if they appeared to be recognized in the main online resources (in particular, Diatoms of the United Sates, Algae Base etc.), and by the community of diatomists. This is a very practical criterion, which sometimes might lead to inclusion of taxa whose merits are still being debated, as long as it appears that they still might have some useful application in everyday practices and some recognition in applied ecology.