Résumé :
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For the first time, all bryophyte species of Germany will be illustrated by photographs. Every species is illustrated on one page (A5) by an assemblence of macroscopic and microscopic pictures, showing the typical appearence as well as all diagonostic relevant characters (see examples below). Since the completion such a project will take many years, the plates of the atlas will be published in fascicles on punched pages. By this way, additional species or species not yet treated can later be added. The Grimmiaceae of Germany include the genera Coscinodon, Dryptodon, Grimmia, Racomitrium und Schistidium. They will be treated almost complete on 67 pages. Merely Schistidium confusum, S. grande and S. lancifolium, are not treated, since there exist no photographs so far. On the other hand, pictures of the newly described Grimmia dissimulata and Schistidium spinosum are included, also of the newly recognized species Grimmia lisae and Grimmia meridionalis.
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