From the abstract: Our initial investigation of various permanent waters, particularly ground - water springs and wells of Sardinia yielded no taxa other than those known from continental Italy or other parts of Europe. In temporary bodies of water, however, especially in large rock pools on basalt, diatom assemblages including many rare or unknown species were detected. Of the 77 taxa from Sardinia new to science, 76 are here described. FRUSTULIA ALFINITOSILVIAE having been described in Lange - Bertalot 2001. Two additional species from South America and the European continent are introduced as new to science because they may be confused with taxa from Sardinia. More than 40 other morphodemes are discussed and/or illustrated by photomicrographs, but these are still unidentified or uncertain new taxa. Contents: Abstract / Riassunto/ Quickfinder for Plates/ Sardinia: the environment/ Diatom communities in Sardinia/ Sardegna: l'ambiente fisico/ Le comunità diatomologiche in Sardegna/ Material and methods/ Diagnoses and discussion of the taxa/ Acknowledgements/ References/ Plates / Index of taxa.
