what is the blue fungus spread by mountain pine beetles
From Wikipedia, the free encyclopedia. The blue stain fungus, Grosmannia clavigera, is a species of sac fungus. It spreads to lodgepole pine, ponderosa pine, Douglas-fir, and whitebark pine trees from the body and a special structure in the heads of mountain pine beetles.he 33 Mb genome of this fungus was sequenced in 2009. The blue stain fungus spores germinate and produce a thread like mass (mycelium) that colonizes the phloem and sapwood. Fungal spores are usually blown away by wind but blue-stain spores are âstickyâ.