No reason why art shouldn't come into the representation of fungi, or any other life form!
That's a stunning image that would make an eye-catching book cover and there are some beautiful photos showing various named fungi in their natural settings if you take a look through the rest of the images......
Wish I could get some fungi shots that good
Afterthought - Roger Phillip's much acclaimed book 'Mushrooms and other fungi of Great Britain and Europe' is completely illustrated with studio shots of species.