Abstract
Heterodermia hypoleuca (Ach.) Treis.,H. japonica (M. Sato) Swinscow & Krogand H. subascendens (Asahina) Trass. have been recorded for the first time in Mongolia. Data on substrates, habitats, distribution are listed for every species. Taxonomic comments and distinctive characters are provided for these species. The habitats are briefly described and the frequently associated species are listed. It is interesting to note that as a result of processing hundreds of herbarium collections of lichens, numerous new species were found in Mongolia. This means that there is still a substantial gap in the knowledge, especially about the lichen flora of remote corners of the country, which are numerous.
Highlights
According to the checklist of the mongolian lichens by Biazrov Lev G [5] there are 1067 lichens and 13 lichenicolous fungi known in Mongolia
The small number of lichenicolous fungi registered so far is perhaps because of the limited investigation carried out into this group of fungi in Mongolia [14, 15, 16, 17]. This time, we present 3 species to be added to the lichen flora of Mongolia
The objective of the present work is to present a new species of Heterodermia of lichenised Ascomycetes and Physciaceae, newly discovered in Mongolia for the first time
Summary
This time, we present 3 species to be added to the lichen flora of Mongolia. Until recently only two species of Heterodermia such as H. leucomelos (L.) Poelt from willow bark [2] and H. speciosa (Wulfen in Jacq.) Trevis from mossy rock [9, 10, 7, 8, 11] were known from a very few localities in Mongolia. Species identification of Heterodermia and Physciaceae were carried out basing on samples of lichens collected by the author in 1995 from Bogd Uul Mountain in the southern
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