The correlation of geographic distribution and ecological environment of endemic species Floccularia luteovirens on Qinghai-Tibet Plateau

Floccularia luteovirens,also named yellow mushroom or golden mushroom,had been assigned in Armillaria as A.luteovirens. Floccularia luteovirens belongs to Basidiomycota,Agaricomycetes,Agaricales,Agaricaceae,Floccularia,an d usually forms the special fairy ring. Because of the special water and temperature conditions,the climate of Qinghai-Tibet Plateau is complicated,which forms a precious treasury of fungi. Floccularia luteovirens has got adapted to the Tibetan low pressure. In addition,F. luteovirens can be edible,and also has medicinal values as well as important ecological functions.Thus it has become one of the representatives in this treasury. The problems about F. luteovirens,however,are that the artificial domestication of F. luteovirens is unsuccessful,which has restricted its utilization. Comprehensive research on its utilization is also lacking. In particular,F. luteovirens is often picked illegally for economic benifits by many herdsmen,which has caused the rapid reduction of its population. The most important step of reaching the artificial domestication is verifying the relationships between its development and enviroments. Researches on F. luteovirens in China started late and develops slowly. Although the geographical distribution of F. luteovirens has been investigated,no high-value conclusion could be obtained because of the incomplete investigation and culpable consideration. In order to improve this situation,and get more scientific results and to help protecting this fungus,a comprehensive investigation is conducted. In total,22 regions in China has been selected from 2008 to 2012,for example Qinghai,Tibet and Sichuan. Morphological or ecologicalcharacteristics are recorded,i. e. its geographic distribution,macroscopical and microscopical characteristics as well as climatic types of its growing region. The main conclusions of this study are: 1) F. luteovirens is characterized by whitish to sulfur pileus covered with concentric squamules,yellowish to yellow lamellae,whitish stipe of whitish curly hairs on surface; 2) in China,F. luteovirens is mainly distributed from 28[degrees]93' to 37[degrees]69' in northern latitude and 90[degrees]4' to 102[degrees]1' in eastern longitude in Qinghai-Tibet Plateau; 3) the fruiting body of F. luteovirens mainly forms at late summer or early autumn( Jun to Sep) in this region; and 4) the average temperature of forming fruiting body is between 6.2 [degrees]C and 15.9 [degrees]Cand the average relative h