木兰属(Magnolia)的地理分布及起源

分析了现代木兰属（Ｍａｇｎｏｌｉａ）植物的地理分布及其散布途径，认为华夏植物区系区域不仅是现代木兰属的分布中心，同时也是木兰属的分化中心及原始类群保存中心，并结合地史资料，推断全球木兰属植物应共同起源于华夏植物区系。

The Geographical Distribution and Origin of Magnolia

The geographical distrbution of present \%Magnolia\% and the dispersal route were discussed,the results show that Cathaysia-flora is not only the center of distribution and diversity of \%Magnolia\%,but also the preserve center of primitive taxa of \%Magnolia\%.On the basis of these,with the material of historial geology,it is suggested that \%Magnolia\% in the world should origin in Cathaysia\|flora.