Pisolithus hypogaeus

Pisolithus hypogaeus is a fungus in the genus "Pisolithus", occurring in coastal south-western Australia in association with eucalypt ectomycorrhizal hosts on sandy soils. DNA samples show that "Pisolithus hypogaeus" is a relative of other brown- and echinulate-spored "Pisolithus" species, and is most closely related to two undescribed epigeous "Pisolithus" species from Australia.