中文摘要：

在野外调查的基础上，报道了浙江省杭州市区苔藓植物51科，92属，201种．其中苔类20科，24属，46种；藓类31科，68属，155种，中国新纪录种1个，浙江省新纪录属1个、新纪录种4个．该地区苔藓植物区系成分以东亚成分、北温带成分为主，其次是热带亚洲成分，分别占39．52％，24．55％和14．37％，具有从亚热带向北温带过渡的特征．比较杭州市区与上海、无锡市苔藓植物组成，发现杭州市区苔藓植物物种最为丰富，这可能与该地区多丘陵的地形特点有一定关系．

英文摘要：

Based on the field investigation, 201 species in 92 genera and 51 families of bryophytes, from urban areas of Hangzhou, Zhejiang province, are reported in the present paper. Of these, 46 species belonging to 24 genera and 20 families are liverworts. 155 species belonging to 68 genera and 31 families are mosses. One species is new to China. Four species and one genus are new to Zhejiang province. Floristic analysis showed that East Asian, North Temperate and Tropical Asian elements account for 39.52% , 24.55% and 14.37% , respectively. The bryoflora of urban areas of Hangzhou has a transitional characteristic from sub - tropic to north temperate zone. Compared with Shanghai and Wuxi, the bryo - diversity of urban areas of Hangzhou is the most rich. The reason maybe relate to more hills in the study areas.