翅果形态及其在槭树科分类与演化上的意义

槭树科（Ａｃｅｒａｃｅａｅ）是北温带分布的科，含２属，全世界约２００种，中国是槭树科植物的现代分布中心。对槭树科翅果的专门研究尚未见报道。本文１、引用一套槭属翅果形态学术语；２、观察并描述７５种械属植物的翅果；３、研究槭属１６个组的翅果的１７个可比性状，根据分枝系统分析法得出槭属各组的演化关系及趋势，这趋势与依据其花、叶等性状得出的演化关系基本上是一致的。

SAMARA SHAPE OF ACERACEAE AND IT'S IMPLICATIONS IN SYSTEMATICS AND EVOLUTION

Aceraceae, including two genera and about 200 species, is one of the main element of the North temperate. China is it's modern distribution center. Samara shape is very important in systematic and evolutional studies in Aceraceae. No specially research into samara shape has been reported so far. In the present paper samara shape was studied comprehensively. A newmorphological study on 75 species of Acer was made. Seventeen characters in 16 sections of Acerwas researched by using cladistic method. A new phylogenetic relationships in the sections werefound.