Cortinarius purpurescens is highly poisonous!!! :yikes: The toxin which makes it so is slow acting though, and it can take years to for any symptoms to develop, hence a lot of confusion with this species, although there are well documented cases of many people in France and elsewhere of having died from acute liver and renal failure as a result of eating this species, especially when it has been sold as wood blewits on market stalls etc. The spore print IS the clinch with Lepista nuda, it took me a while to figure that one out too, but don't be complacent about the other, it could cost you......
P.s. Wood blewits are no good for drying, they should ALWAYS be cooked and the tendency if drying is to forget to do so thoroughly when reconstituted.