Перші відомості про мікофільний гриб Letendraea helminthicola (Berk. et Broome) Weese ex Petch в Україні

Abstract

The article provides information about a worldwide rare species of fungicolous fungi Letendraea helminthicola (Berk. et Broome) Weese ex Petch, recently found by the author on the territory of National Nature Park “Skolivsky Beskydy” (Skole area, L’viv region, Carpathians, Ukraine). This fungus sporulates on the conidiomata of Helminthosporium spp., mainly H. velutinum Link on the branches of trees. Until now, Letendraea representatives have not been recorded on the territory of Ukraine. General characteristics of the genus, a brief historical sketch of its research and modern views of its systematic position in Ascomycota system (Didymosphaeriaceae Munk sensu Ariyawansa et al, Pleosporales Luttr. ex M.E. Barr, Dothideomycetes O.E. Erikss. et Winka) are presented. In this study, besides our own sample of Letendraea helminthicola, we investigated the isotype of this species from scientific herbarium of the Department of Mycology and Plant Resistance of V.N. Karasin Kharkiv National University. Complete nomenclature characteristics, the detailed description, original illustrations, as well as the information about ecological features of this species and its distribution in the world are given below.