Psilocybe fimetaria is often a widely distributed although not very common magic mushroom that grows in the UK. It may possibly increase around 9cm tall and it has a small convex cap just a couple centimeters in diameter. It’s pale purple to brown in colour, and turns yellow when dried. https://magicmushroombuyonline71468.blogoscience.com/40794919/5-essential-elements-for-how-to-get-magic-mushrooms-uk