Mechorosty zaznamenané během 28. jarního setkání Bryologicko-lichenologické sekce ČBS na Mariánskolázeňsku

Altogether 206 bryophyte taxa (42 liverworts and 164 mosses) were recorded during excursions in the westernmost part of the Český les Mountains, West Bohemia. We managed to record the critically endangered liverwort Frullania fragilifolia at a locality adjacent to Upolínová louka pod Křížky Nature Reserve near the village of Prameny; three additional species are considered vulnerable (Calliergon giganteum, Cleistocarpidium palustre and Weissia squarrosa) and nine are near threatened. Bryum gemmiferum and Ceratodonconicus are insufficiently known taxa in the country,and the collections of Campyliumpartly belong to a taxoncorresponding to neither C. stellatum nor C. protensum.