“According to the myth, this flower blooms for a very short time on the eve of the summer solstice. The flower brings fortune to the person who finds it. In various versions of the tale, the fern flower brings luck, wealth, or the ability to understand animal speech. However, the flower is closely guarded by evil spirits and anyone who finds the flower will have access to earthly riches, which have never benefited anyone, so the decision to pick the flower or leave it alone is left up to the individual.”

Source – Wikipedia