The jack o'lantern mushroom is an orange- to yellow gilled mushroom. It looks like the chanterelle and emits light. Unlike the chanterelle, the jack o'lantern mushroom is very poisonous. While eating this mushroom will not kill you, it may cause cramps, vomiting, and diarrhea. This mushroom smells and looks very appealing, so there are reports of repeat poisonings from individuals who were tempted to try them a second time.