Book excerpt: The Netherlands are a small country, characterized by a large diversity of fresh to slightly brackish, oligo- to hypereutrophic stagnant and flowing inland waters. This diversity is reflected in a remarkable richness of phytoplankton species with blue-green algae as an important component. Identification of phytoplankton frequently brings on serious problems, due to the scarcity of up-to-date floras. This book, written by an acknowledged Dutch phytoplankton expert, presents a new modern approach to the identification of phytoplankton of The Netherlands. • treats 95 species belonging to 23 genera of non-filamentous blue-green algae in the plankton of Dutch inland waters including one new genus and 15 new species • nomenclature according to modern insights and in agreement with international rules • 500 original black-and-white photographs show all the details necessary for light-microscopical identification • contains an identification key to the species and comparing every species to similar forms • information on ecology and occurrence in different water types • relevant literature references