槭树科植物广义形态学性状分支分析

通过45个广义的形态学性状对槭树科(Aceraceae)尤其是槭属(Acer L.)的主要类群做了分支分析，结果显示：1)槭属内由于各类群分布着较多的同塑性状状态，而难以为属下组间关系的解决提供更多有价值的信息；通过对具体的性状状态分布分析显示，对于象槭属这样在形态上分化较大的类群，由于多数分类性状在不同类群间经历了平行和逆转演化，因而在较低分类阶元水平很难选择合适的性状来通过分支分析构建其系统发育；2)鸡爪槭组(section Palmata)作为整个槭属的基部类群，虽然支持率较低，但与其它类群相比在槭属内维持了较多的原始性状；3)金钱槭属(Dipteronia Oliv.)的两个种作为单系得到了100％的靴带支持，且和槭属作为姐妹群也得到了较好的支持。

A Cladistic Analysis of the Aceraceae Based on Morphological Data Set

Based on the forty-five morphological characters sensu lato,a cladistic analysis of the family Aceraceae,including both species of Dipteronia and twenty-six species representing all twenty-three sections of Acer of Ogata's system was carried out.It was indicated that:1) due to the high-level distribution of homoplastic characters in Acer,it is difficult to use cladistic method to resolve the phylogenetic relationships of the sections as currently defined;2) In Acer,the section Palmata preserving more archaic characters was supported as basal to the rest of the genus but with lower bootstrap value;3) the monophyly of Dipteronia was strongly supported and the sister relationship between the two genera were also supported by certain distinct characters.