Abstract: This paper studied the VA mycorrhiza of 10 Eusporangiate plants associated with the VA mycorrhiza fungi in their rhizospheres. It was found that 10 Eusporangiate plants were all mycorrhized with VA mycorrhizal fungi,and 9 species of VA mycorrhizal fungi were isolated from the rhizosphere soil of the 10 Eusporangiate plants. Among them, Glomus and Acaulospora were the dominant fungi. VA mycorrhiza may play an important role in the evolution of Eusporangiate plants.

Key words: Eusporangiate