"While there are other purple mushrooms, some of which are poisonous, they can be fairly easily distinguished from Clitocybe nuda. Inocybe species have brown gills and spores when mature. Purple Cortinarius species have a cortina when young, and have rusty-brown spores. Mycena pura is small and slender, and has white spores. Purplish Laccaria species like Laccaria amethystina have tough, fibrous stems; they are white-spored and edible. Bluish Entoloma and Leptonia species are not nearly as purple."
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