cortinarius mutabilis: a fungus with a reddish purple cap having a smooth slimy surface; close violet gills; all parts stain dark purple when bruised
fungus: an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia
aurora: an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force