Abstract: The present paper presents Latin descriptions of 15 new fern species collected from the Mountain Jiulung-shan in southwestern Zhejiang Province, East China. It is situated not far from the border of Fujian Province to the south with an elevation at 1, 950 meters. Because of its rugged topographic features and in accessibility to the outside world, the mountain is still covered by primitive forest of broad-leaved evergreen trees ancient times. Until the fall, 1980, it was explored for the first time by Prof. P. C. Chiu and his student of the Department of Biology, the Shanghai Teachers University. As a result, they collected a large number of ferns, of which 15 species have recently been identified as new to science.