Comment by contingo

Psilocybin-producing mushrooms are widely dispersed across the clade of all other true mushrooms and their genomes clearly show there is no great mystery about their evolutionary history or relationships to other fungi. Modern phylogenetics completely discredits panspermia as an origin for particular species or groups of fungi: they all share a single common ancestor and they are all connected to our single Tree of Life as with every other known lifeform on Earth.