But even that slightly incomplete discovery by the Victorians 150 years ago was radical for its time.
Scientists assumed that lichens were ,like every other organism they knew then , a single organism.
And they were confounded by lichens.
The first scientist to even suggest otherwise- to publish the suggestion that maybe lichens are a compound organism, and that they are a symbiotic combination of a plant and a fungus was....take a WILD guess who.
Hint: remember your childhood love for Peter Rabbit?
It was none other than Beatrix Potter. Now best known for those lovely children's books that she both wrote and illustrated.
Few today know that she also used her artistic talents to document stuff she saw through the microscope, and did pioneering work on studying fungi.