贵州云台山种子植物区系的研究

A STUDY ON THE FLORA OF SEED PLANTS OF YUNTAT MOUNTAIN IN GUIZHOU PROVINCE

云台山是黔东种子植物区系丰富的地区之一，共有种子植物１２２科，３４９属，５２７种。对该区种子植物的科、属、种进行了详细的统计分析，认为该区种子植物区系中古老子造植物和珍稀濒危植物较多。地理成分有１４个分布类型。热带分布类型有１４０属，温带分布类型有１６０属。热带与温带成分在本区交错分布，体现了本区的业热带特色。在植物区系的分区上，将该区归入西南区。

Yuntai Mountain is one of the richest seed plant floras. in eastom Guizhou. It contains 122 families, 349 genera, 527 species (including substpecies, varieties and form). Based on the thorough and careful statistical andlysis of families, genera and spotes, the resulta in the poper show that: there are abundant ancient, relict, rare and nearly exerminating Plants. The geographical elements are complex and varied in the flora In the 349 genera, there are 14 geographical elements. Tropical distribution pattern has 140 genera among which 59 are pantropical ones, and28 tropical Asia elements.Temperate distribution genera have 160, among them 73 belong to the North temperate elements, and 41, East Asiatic elements.(It is interesting that there are 10 genera endemic to China.)