This interesting looking fungus grows on trees and is called Ganoderma Resinaceum. It attacks the heart wood of a tree and so if you see it in your garden, call us for an inspection. You may find that the tree has become unstable and needs to be felled for safety reasons.
Ganoderma is a genus of polypore mushrooms that grow on wood, and include about 80 species, many from tropical regions. Because of their extensive use in traditional Asian medicines, and their potential in bioremediation, they are a very important genus economically. Ganoderma can be differentiated from other polypores because they have a double-walled basidiospore. They are popularly referred to as shelf mushrooms or bracket fungi.
You can read more about it here: https://en.wikipedia.org/wiki/Ganoderma