单系类群

该属植物种子的形态特征非常相似，表明该属是一个自然的单系类群。

The most features of seed surfaces among the species of Illicium are similar and constant , which supports that the genus should be relatively natural monophyletic group .

组成一个单系类群。

Constitute a monophyletic group .

并未构成一个单系类群。本文还利用分支关系分析和讨论了真正柑桔果树群的种系发生关系。

The phylogenetic relationship of the true citrus trees is analysed and discussed .

②木犀属植物是一单系类群；

Cooperi constitute as a monophyletic clade ;

结果表明叶绿体片段和核片段均支持“翅茎草复合群”不是一个单系类群，可以划分为两个不同的分支。

The results showed that " Pterygiella complex " was not a natural group and could be divided into two different clades .

竹亚科分成草本和木本两个单系类群，木本竹子又分成热带和温带支系，热带支系进一步分成新世界热带和旧世界热带两个单系类群。

The woody Bambuseae were divided into two monophyletic groups , one being the temperate bamboos and the other the tropical bamboos , which were composed of the old world tropic subclade and the New World tropical subclade .