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In the years 2000-2001, the occurrence of fungi parasitizing on ornamental plants and herbs cultivated in the Vegetative Hall of the Agricultural University in Szczecin was investigated. The plants represented ca. 200 species. Disease and etiological symptoms were found in 37% of plant species. Most diseased plants came from the family Asteraceae. The plant species most frequently affected was Melisa officinalis. In the laboratory, 35 fungal species were recognized. Most fungi came from the phylum Ascomycota (13 species), and least from the phylum Oomycota (3 species). The phylum Ascomycota was represented only by species of the order Elysiphales. Other relatively frequently found fungi also were members of the phylum Basidiomycota (11 species). Of the fungi recognized, 31 species were earlier frequently recorded in Poland, and three rarely. Erysiphe flexuosa parasitizing Aesculus hippocastanum was not recorded in Poland to date; in Europe this fungus was recognized only in Germanyand Switzerland.
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Acta Agrobotanica
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2005
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tom 58
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nr 2
417-428
In the years 2001-2004, the occurrence of parasitic fungi of plants of the genera Betula and Salix growing in the Słowiński National Park was investigated. The plant species examined included B. pubescens, B. pendula, S. aurita, S. caprea, S. cinerea, S. fragilis, and S. repens. Plants of the genus Betula were affected by 9 species of parasiting fungi. In Poland, three of them (Microsphaera ornata var. europaea, Phyllactinia guttata, Melampsoridium betulinum) occur commonly, five (Asteroma leptothyrioides, Discula betulina, Fusicladium betulae, Phyllosticta betulina, Septoria betulina) are rare, and Septoria betulae-odoratae has not been recorded to date. Three species, Asteroma leptothyrioides, Fusicladium betulae, Phyllosticta betulina), were found on new plant hosts. Plants of the genus Salix were attacked by 8 species of parasiting fungi. Four of them (Melampsora allii-fragilis, M. caprearum, M. epitea, Uncinula adunca var. adunca) are common in Poland, four (Marssonina salicicola, Phyllosticta salicicola, Septoria salicicola, Trimmatostroma betulinum) rarely occur here. Uncinula adunca var. adunca, Marssonina salicicola, Phyllosticta salicicola, Septoria salicicola and Trimmatostroma betulinum were associated with the plant species not reported earlier to be their hosts.
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Species of anamorphic fungi rare and new for Poland

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Morinia pestalozzioides, Seimatosporium hypericinum, Septoria artemisiae, S. artemisiaemaritimae, S. achilleicolaand S. symphyti, fungi not recorded in Poland before, are described and illustrated. The species were found during studies on the occurrence of parasitic fungi conducted in selected sites in the Słowiński National Park and in the Western Pomerania between 2001 and 2004.
The morphological properties of Schizothyrioma ptarmicae (Helotiales, Ascomycota), a fungus known from a single locality in Poland and infrequently reported from Europe, are described and illustrated. Schizothyrioma ptarmicae is a parasite of leaves of Achillea ptarmica. It has been found in the Myrico-Saliceto auritae and Cirsio-Polygonetum plant associations of the Słowiński National Park. Additionally, the properties of the specimens of S. ptarmicae collected were compared with those of S. aterridium, the only other member of the genus Schyzothyrioma.
In 2010–2011 the studies on identification of parasitic fungi on selected tree species were carried out in the Dendrological Garden in Przelewice were performed. The research materials were above-ground parts of 9 plant species: Betula pendula, Betula maximowicziana, Cornus kousa, Acer pseudoplatanus, Acer negundo, Magnolia stellata, Robinia pseudoacacia, Populus tremula and Cerasus serrulata. As a result of the micological analyses 17 species of fungi were identified. The most numerous species (13) belonged to anamorphic fungi. The identified species of fungi belonged to 15 types. The largest number of types (11) belonged to anamorphic fungi. Basidiomycota and Ascomycota were represented by 2 types of fungi. Among others the following species were found: Diplodia atrata, Melasmia acerina, Uncinula bicornis, Melanconium betulinum, Stigmina carpophila, Phyllactinia guttata, Septoria cornicola, Colletotrichum gloeosporioides, Phyllosticta magnoliae, Asteroma frondicola, Melampsora populnea.
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