Abstract: From the following facts it follow that the Qing-Zang plateau Began ro elevate since the Tertiary.From the viewpoint of the area where we discovered the plants. We have a survey of the Polytrichaceae in Tibet mainly distributed in SE.Tibet and S>Tibet.This area is just along the valley of the Yalu Tsangpo(Yalu Tsangpo River).According to the theory of the continental drift,this area may well be the seam where the northern edge of the India Plate and the southern edge of the elements of Asia meet.Thus the plants of this area include not only the elements of Laurasia,but also those of Gondwanaland.As a result of this,this plants os this area characteristic if complexity of elements and greatness of species.It is because of the creash of the India plate and the continent of Asia that the Qinghai-Xiang(Chinghai-Tibet) area is uplifed by the impact of the crash.

Key words: Tibet

摘要： 西藏金发藓科植物，已知有7属，30种，4变种；其中新种5个，新变种3个。从水平分布看，大多集中雅鲁藏布江流域附近，因该流域是印度板块北缘与欧亚大陆南缘的缝合线，因而金发藓科植物得以高度集中。本文讨论了该科在本区的地理分布和区系成份的分析等问题，并讨论了青藏高原的隆起对该群藓类的影响。

关键词: 西藏, 金发藓科