322 bryophyte taxa have been recorded during the 13-day bryofloristic inventory of the Czech part of summit region of the Eastern Giant Mts., carried out in 1998-2000. The results were compared with the voluminous historical record and partial herbarium revision. Racomitrium macounii subsp. macounii is reported for the first time from the Czech Republic, Mnium ambiguum, considered extinct from our flora, has been re-found. Site details for the most important finds are presented in addition to the complete list of taxa found during the survey on the 15 study sites. The changes in the bryoflora with respect to the historical record are briefly discussed.