Bryophyte flora of the Czech Republic: updated checklist and Red List and a brief analysis.

The bryoflora of the Czech Republic is analysed using an updated version of the checklist that includes recent taxonomic and nomenclatural changes. In addition, the baseline data was completely revised using the IUCN 3.1 criteria. The main list includes 863 species of bryophytes (4 hornworts, 207 liverworts and 652 mosses) with 5 additional subspecies and 23 generally recognized varieties; 9 additional species are listed as of doubtful taxonomic status and 17 other species are evaluated as of uncertain occurrence. Of the 892 taxa evaluated, 46% qualified for inclusion in Red List categories (40 taxa in category RE, 70 in CR, 88 in EN, 93 in VU, 66 in LR-nt, 24 in DD-va and 30 in DD), while 54% are considered Least Concern (LC).We discuss the taxonomic problems that influenced our decisions when compiling both the check- and Red Lists, try to identify the alien, invasive and spreading species of bryophytes, and touch upon several phytogeographic aspects, including the questions of relictness and bryophyte endemics in the Czech bryoflora.