 The Slimy Yellow Cortinar ("Cortinarius sinapicolor") is one of the more commonly encountered species that forms mycorrhizal relationships with various Eucalyptus species and is recognisable by its viscous sulphur-yellow fruit bodies.The Australian citizen-science organisation, Fungimap is documenting and mapping the distribution of fungi including those that occur in National Parks.Despite their essential roles in supporting ecosystems, fungi are barely recognised as a vital part of Australia's biodiversity.