The land, water and air around us are chock-full of DNA fragments from fungi that mycologists can’t link to known organisms. These slippery beings are so widespread scientists are calling them “dark fungi.” It’s a comparison to the equally elusive dark matter and dark energy that permeates the universe.
“Many fungi are microscopic, even unicellular, and a tiny sample of biological material may contain hundreds that are hard to isolate.”
Yup, there you go…
Wait, what about g-g-g-ghost mushrooms?!?
And I bet some of them grow only under really specific conditions.