Mycorisa is a cure by Barter.

And of course mushrooms are needing for a cure tress and animals in wild nature.And symbiosis for mushrooms and tress are calling mucorysa are damaged always, and true facts for presence as not recognized. And this means,that boletus preparing under aspens, and  boletus with brown hats at fir or pine s forests, brown cap boletus are under birches,and these relations meaning,that trees selecting a right spouses, and what are about criterion's?just for a beautiful hats? And trees are having an own method for selection, like in human.
And in mind think about, that a human lives in the town centre, and in window are often filling smoke, and human suffering of bad breath, lungs, thus allergist need cure his, or a family lives is on the edge of march lake, in bad climate, and children's here needing in lor, so as tonsils and adenoids here are big, and by a such principle selecting and spouses are trees, as fungus for theirs are doctors, and not wounder,these facts are true.