According to their present distribution, the gen-era in the flora subregion can be classified into 15 areal-types and 14 subtypes, the species into 25 areal-types and 27 subtypes.

通过对它们的现代分布进行研究，将本亚地区属归纳为15个分布区类型和14个亚型，种归纳为25个类型和27个亚型。