PATHOGENIC FUNGI AND NATURAL PLANT POPULATIONS Ⅲ. Pathogenic fungi host plant coevolution and population models for vector dispersed diseases STUDIES ON PARASITISM AND HOST-FEEDING OFAPHYTIS SP., A PARASITOID OF HEMIBERLESIAPITYSOPHILA TAKAGI Growth characteristic analyse of shading levels on four Hosta Cultivars STUDIES ON THE SELECTION OF SECONDARY HOST MOSS PLANTS AND THEIR PROPAGATION AND UTILIZATION OF SCHLECHTEN-DALIA CHINENSIS IN GUIZHOU PROVINCE New host plant of Cynomorium songaricum New host plant of Cynomorium songaricum Isolation of eugenol from volatile oil of cloves by inclusion method