TWO NEW SPECIES OF THE GENUS CALOSTOMA FROM CHINA
美口菌属二新种

Two new species of the genus Calostoma collected from Yunnan and Hunan Provinces respectively are described.These are Calostoma yunnanensis and Calostoma pengii.The spores of the former species are easily distinguished from all others by their cir- cular pitted epispore,and there are many minute,irregular pores among these pits as well. The spores of the latter species are easily distinguished from all others by their rugous epi- spore.The type specimens of the former are deposited in the Herbarium of Peking Natural History Museum(HPNHM),Beijing,and those of the latter are deposited in the Herbari- um of the Department of Biology,Shanxi University(HBSU),Taiyuan.The duplicates of the latter specimens have been retained by Mr.Y.B.Peng in Hunan Teacher's College.