Ectomycorrhiza fruiting body, a brown conic mushroom that grows near tree roots.

Ectomycorrhiza fruiting body

Ectomycorrhiza From the Latinized Greek: Ektos, ‘outside’ + Mykos, ‘fungus’ + rhizae, ‘roots’.
Mainly infesting oaks, birches, willows, pines, and the non-native dipterocarps and eucalypts these infections form between the roots of these trees and consist of the Basidiomycota, Ascomycota, and Zygomycota families of fungi. They are characterized as having fruiting bodies (mushrooms and toadstools) that appear above ground usually near the tree. Roots of infected trees are often sheathed in white fungus.