The mushroom from Outer Space

20141011_121931

One of the strange fungi that one might stumble upon on a foray: Stropharia aeruginosa. Not edible. Note that the stipe is white above the ring.

Easily confused with Stropharia caerulea, which is as weird-looking but has a thin, filmsy ring (which falls off quickly), grows on manure and has white mycel often hanging from the base.