A lone mushroom in a field of young cereal plants. It is not often that you see another species in the cultivated fertilised herbicidal pesticidal sprayed monoculture of a modern arable field. Maybe fungii thrive where plant species aren't allowed to. Although if that is the case, why is there just one? No doubt as I type, this guy is spreading his wild rhizomes under the surface, and within a few days there will be a whole family of fungii.
