Abstract:This paper is based on a study of about 1000 specimens of mosses collected by Mr. Zhang Li and the authors in limestone area of northern Guangdong in 1990. The mossflora in this region consists of 187 species, 3 subspecies and 6 varieties in 110 genera and 40 families, among them Homalothecium laevisetum var. triplecatum is new to China, and Sinskea flammea ssp. ochracea and S. flammea ssp. rufifolioides are new to mainland of China. In this mossflora tropical and subtropical elements amount to 41.3%, East Asiatic elements comprise 33.7%, and North temperate elements and elements endemic to China represent 14.7% and 3.5% , respectively．It is very interesting that 8 genera endemic to East Asia have been found in this region．A name list of bryophytes is given．