它们的分布区具有明显的区域性，在空间上相互替代，成为地理替代分布种。
Their distributions have remarkable regional characteristics and replace each other in space, and thus become geographical replacement species.
东亚-北美鹅膏菌的生物地理联系通过地理替代种比通过相同分类群更能明确反映出来。
The biogeographic relationships between Amanita of East Asia and North America are much more clearly reflected by vicarious species than by conspecific taxa.
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