中国拟青霉新种及其与虫草的关系

从虫草[Cordyceps sinenisis(Berk.),Sacc.]上分离到中国拟青霉新种(Paecilomyces isnenisisp.nov.),对它进行了培养和形态学研究。中国拟青霉与蛹草[cordyceps militaris(L·)Liak]的无性阶段形态非常类似,但在分生孢子形态,分生孢子和瓶梗的量度上有所不同,且两者的寄主及生境不同,故定为新种。不仅可从长子座的殭虫获得其纯培养物,也可从不长子座而长孢梗束的虫草纯化培养获得。纯培养物的形态和天然虫体的孢梗束完全相同,故认为它可能是虫草的无性阶段。

PAECILOMYCES SINENSIS SP.NOV.AND ITS CONNECTION WITH CORDYCEPS SINENSIS

The cultural technique,morphological characteristics and taxonomical position of Paecilomyces sinensis sp.nov.,which may be the asexual stage of Cor- dyceps sinensis(Berk.)Sacc.,is reported in this paper.The larvae bearing Cordyceps sinen- sis,being collectel freshly from Kangding County,Sichuan Province,China,in June 1980, were isolated and cultured on several media in the laboratory.The morphological characte- ristics of Paecilomyces sinensis sp.nov.are quite similar to the conidial stage of Cordyceps militaris except distinctions in shape and size of conidia as well as size of phialides.Besides these,the hosts and habitats of these two species are also different,so we consider Paecilo- myces sinensis as a new species.Paecilomyces sinensis may occur both on the larvae merely bearing synnemata or on the larvae bearing stromata with perithecia.The characteristics of the two cultures are exactly alike. Chinese and Latin diagnoses are given for the new species.The type specimen HMAS (43720)is deposited in the Institute of Microbiology,Academia Sinica,Beijing,China.