Claim: The study of Matheny et al and in 2006 included Volvariella gloiocephala that was placed as the sister group of Pluteus (a large genus of fungi with over 300 species).
Evidence: The study of Matheny et al. in 2006 included Volvariella gloiocephala that was placed as the sister group of Pluteus. Pluteus is a large genus of fungi with over 300 species.