There are 12 areal types and 6 subtypes. The distributed type is diverse.

有12个分布区类型和6个变型，分布类型多样。

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The species of Mongolian areal type are 29% of areal type and those of Mongolian-northern China areal type are 24%.

分布区型结构以蒙古分布区型的种类最多占29%，蒙古—华北分布区型次之占24%。

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The species of Mongolian-Northeastern China-Dahuricia-China North areal type forms 29%, and the Mongolian-Dahuricia areal type 13% of the total.

分布区型结构以蒙古-东北-兴安-华北分布区型的种类最多占2 9% ，蒙古-兴安分布区型次之占13% ；

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