Abstract
This work done in Arboretum Stradch (Ukraine) extended the investigation of the epiphyllous bryophytes diversity in the temperate zone started by Pundiak and Michalko (2020) in Arboretum MlyÅany (Slovakia). It was identified two taxa of not typically epiphyllous bryophytes, all belonging to mosses and considered as generalists and obligate members of bryoflora of Ukraine at low risk of extinction: Brachythecium salebrosum (Hoffm. ex F. Weber & D. Mohr) Schimp. and Hypnum  cupressiforme  Hedw. As epiphylls these taxa were also the most abundant in MlyÅany. The both identified epiphylls occurred mainly on young individuals of a gymnosperm phorophyte Abies alba Mill., which grew near the trunks of 50 years lindens Tilia cordata Mill.  abundantly covered by mosses. H. cupressiforme also occurred rarely on leaves of two deciduous angiosperm phorophytes: Corylus avellana  L. and Ulmus glabra Huds. growing near trunks of 140 years oaks Quercus robur L. densely covered by the same moss species. B. salebrosum occurred also on one species of evergreen angiosperm phorophyte Rubus caesius L. (near mentioned trunks of T. cordata )  and on one species of deciduous angiosperm phorophyte Ulmus glabra Huds. (near mentioned trunks of Q. robur ), but scarcely.
Highlights
IntroductionBryophytes as non-vascular plants are able to grow on various substrates: rocks (epilites), soil (epigeits), tree bark (epiphytes), rotting logs (epixilics) and on leaves
Bryophytes as non-vascular plants are able to grow on various substrates: rocks, soil, tree bark, rotting logs and on leaves
In Central Europe biological diversity and ecology of bryophytes growing on leaves of woody phorophytes are almost unexplored, the fact that among all identified bryophytes in Mlyňany there were only mosses and they grew exclusively near the objects densely covered by moss carpets points out certain peculiarities of Central European epiphyllous bryophlora
Summary
Bryophytes as non-vascular plants are able to grow on various substrates: rocks (epilites), soil (epigeits), tree bark (epiphytes), rotting logs (epixilics) and on leaves. In the arboretum Mlyňany such mosses grew mostly on leaves of subtropical woody evergreen understory planted exclusively near trees or rocks densely covered by the same moss species. Such limiting conditions may be the cause why epiphyllous bryophytes in Central Europe didn’t get attention of famous bryologist, investigator of the epiphylls around the whole world, hungarian Tamás Pócs (Orbán & Pénzes-Kónya, 2013). For the elucidation of such peculiarities we chose the Arboretum Stradch (Ukraine), which has a good collection of wide-spread woody species of local flora and of temperate regions around the world
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