I know of no other mushrooms that bruis blue exept boletes(straightforward to differentiate, they've pores, not gills). i've listened to something about a lactarius (or some sort of milky) that exudes a bluish latex but that may be wholly diferent than bruising. Stem The stem is off white, marginally shaggy https://bentdirectory.com/listings12560678/the-definitive-guide-to-magic-mushshroom-shop