Ascomycetes and their anamorphs associated with shoots of silver birch (Betula pendula) growing in the urban greenery of Nitra in Slovak Republic

Abstract

Microfungi of silver birch (Betula pendula) were studied in urban greenery of Nitra. Samples
were collected in November 2011 and April 2012. In this investigation were used incubations
of fresh material in moist chambers and the conventional photomicroscopy for morphological
descriptions. During the study of the mycoflora of birch shoots seven anamorph species of
Ascomycetes were recorded on the collected samples. Fungus found on shoots was Disculina
betulina. Discula betulae, Alternaria alternata and Fusarium sp. were the other fungi recorded on
leaves. Prosthemium betulinum, Myxocyclus polycystis and Phoma sp. were found on wood and
bark. Disease symptoms and some distinctive morphological features are described in this work.