About 35 genera and 1500 species: nearly cosmopolitan, especially in temperate and subarctic regions of N hemisphere; 22 genera (one endemic) and 457 species (240 endemic) in China.

• 大约35属和1500种：近世界性，特别是北半球的温带和近北极的地区；在中国的22属(一特有)和457种(240特有)。