A checklist of ascomycetous microfungi of the Nuratau Nature Reserve (Nuratau Mountains, Uzbekistan) was compiled for the first time as a result of field research conducted in 2009–2017. In total, 197 species, 3 varieties and 51 forms of micromycetes belonging to 66 genera and 30 families have been identified. Among them 19 species (Asteromella tanaceti, Camarosporium achilleae, Diplocarpon alpestre, Diplodia celtidis, Hendersonia ephedrae, Mycosphaerella artemisiae, Neopseudocercosporella capsellae, Phoma hedysari, P. mororum, Phyllosticta prostrata, P. silenes, P. trifolii, Ramularia trifolii, Rhabdospora eremuri, Selenophoma nebulosa, Septoria cyperi, S. dauci, S. ranunculacearum, S. trifolii) and one form (Erysiphe cichoracearum f. tanaceti) were found for the first time for the mycobiota of Uzbekistan. 30 species of microfungi were recorded on 31 new host plants. The most abundant species are representatives of the cosmopolitan genera Ramularia, Septoria, Erysiphe, Leveillula, Mycosphaerella, Phoma, Cytospora, Sphaerotheca, Phyllosticta and Marssonina. The annotated checklist includes data on host plant, location, date and collection number of every species.

Lagerstroemia indica is a widely grown ornamental shrub or small tree that has become naturalised and invasive in many tropical and subtropical regions of the world. Lagerstroemia indica is often used to provide

In this study, we analyzed distribution of species of the genus Gymnosporangium in the mountain regions of Uzbekistan, including the Western Tien Shan and Pamir-Alay. Four species of Gymnosporangium (G. confusum, G. sabinae, G. fusisporum, and G. turkestanicum) are reported for Uzbekistan. The telial hosts of these rust fungi are species of the genus Juniperus, while aecial hosts in Uzbekistan are representatives of the genera Cotoneaster, Crataegus, Sorbus, and Pyrus (all Rosaceae). It has been found that the distribution patterns of species of Gymnosporangium within mountain areas of Uzbekistan depend largely on distribution of juniper woodlands because representatives of the genus Juniperus as telial hosts play a major role in the life cycle of these fungi. In that regard, Gymnosporangium species have not yet been recorded in the Nuratau Nature Reserve despite other favorable conditions for these rust fungi in this territory.

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