The Fungus Rock has a most interesting history for being a “mere” rock! Putting its geology aside (you can read more about that in the geology section), its claim to fame in history is mostly due to a number of mistaken facts about a plant that it hosts: the ‘Malta Fungus’ (Cynomorium coccineum), which gave the rock its name.
There are at least three counts of misunderstandings about this plant. Firstly, whilst it was known as a fungus, it is actually a parasitic plant. Secondly, it was thought to be endemic to this rock, but (while certainly rare) this plant is found in various other places, both in Malta (such as at Dingli) and elsewhere in the Mediterranean. It can be found even as far as Afghanistan, Saudi Arabia, and Iran. Thirdly, it was thought to have medicinal powers, scientific evidence for which is lacking.