Morphology of some rare and threatened Polish Basidiomycota

Morphological analysis and orginal illustrations of microscopic elements of 20 species of Basidiomycota (19 of Basidiomycetes and 1 of Urediniomycetes) are the subject of this article. The species arc rare in Poland according to recent distributional maps. The maps of 17 of them: Amylocorticium cebennese, A. subincamatum, A. subsulphureum, Bovista paludosa, Clavariadelphus truncatus, Clavulicium macounii, Conohypha albocremea, Daedaleopsis tricolor, Fomitiporia hippophaeicola, Hymenochaele cruenta, Irpicodon pendulus, Punclularia strigisozonata, Scotomyces subviolaceus, Syzygospora pallida, Thanatephorus sterigmaticus, Trichaptum biforme and Tubulicrinis borealis, were published by Wojewoda (2002) in the "Atlas of the geographical distribution of fungi in Poland", Fasc. 2. The further 3 maps of Coniophora olivacea, Helicobasidium pupureum and Veluticeps ambigua will be published soon in the same series in Fasc. 3