Abstract: The members of Polystichum Roth sect. Lasiopolystichum Daigobo are familiar ferns in the alpine area of W. China, N. India and the Himalayas. They are deciduous with thin, weak leaves; their persistent base of petioles forms a clumb hiding and protecting buds from the frost in winter. This may be an adaptation to severe alpine environments. As an endemic and natural group, the treatment of it by S. Daigobo(1972) as an independent section, Polystichum sect. Lasiopolystichum is reasonable. On the basis of examination of the specimens of mainland China, 30 species are recognized under this section although S. Daigobo(1972) established this section with only three species included. Based on the microseales on the lower surface of pinnae, the section is divided into 2 series: Ser. Moupinensia and Ser. Sinensia. Moreover, three new species, two new varieties and a new combination are reported: P. rufopaleaceum, P. saxicola, P. kangdingense, P. sinese var. lo-batum , P. mollissium var. laciniatum , and P. integrilobum .

Key words: Polystichum sect．Lasiopolystichum, Ser．Moupinensia, Ser．Sinensia, P．