结论：续断属为一自然分类群，花粉粒的细微差异对种的划分有一定意义。

Conclusion: Dipsacus is a natural class group, and the slight difference of its poll...

youdao

结论：续断属为一自然分类群，花粉粒的细微差异对种的划分有一定意义。

Conclusion: Dipsacus is a natural class group, and the slight difference of its poll...

youdao