Omphalotus japonicus

Omphalotus japonicus, commonly known as the tsukiyotake (月夜茸), is an orange to brown-colored gilled mushroom native to Japan and Eastern Asia. It is a member of the cosmopolitan genus Omphalotus, the members of which have bioluminescent fruit bodies which glow in darkness. A 2004 molecular study shows it to be most closely related to a clade composed of Omphalotus nidiformis of Australia, Omphalotus olivascens of Western North America and Omphalotus olearius of Europe. Omphalotus japonicus is poisonous. Its consumption results in acute nausea and vomiting for several hours. It is often confused with edible fungi and mistakenly consumed in Japan....read more on Wikipedia.