Trip to Kew Gardens: Mushrooms

I went on a trip to Kew Gardens in the hope of looking at some mushrooms and/or organic forms like those in the cacti area. I was told that they do have a Fungarium (where they host thousands of species of mushroom) but this was unfortunately not accessible to the public, only to scientists. However in the shop they had this book that was really useful in my study of mushrooms in all their organic forms as inspiration for my work.