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The research also transforms our understanding of fungus biology, a field known as mycology.

The authors' molecular work on type species is a major contribution to mycology because it establishes an authoritative foundation for all future work on Psilocybe diversity in taxonomy.

"I think there has been a cultural need for symbols of connection, for means of connection, and mycology has become a way to meet that need," Vandegrift said.

As an adult, she developed an interest in mycology, the study of mushrooms and other fungi.

DNA discovery has shaken up the world of mycology, revealing signatures of thousands of distinct fungi in soil, water and elsewhere.