On the night of Ivan day a shining flower unfurls at midnight. If someone is able to find it and pick it up, then the flower of the fern will lead to the place where treasures are buried, and will make him the owner of incalculable gold and silver. Hidden treasures come into view of such a person in the form of tongues of flame. However it’s very difficult to find such a flower and pick it up, since an evil spirit (osal), turning into somebody is also on the watch for flowering of the fern and takes the shining flower away from a person. Usually it takes the form of a Russian commander, approaches the Chuvash, says that he also wants to see the flashing of the flower and takes it away from him. (Is a poor Chuvash object to a Russian commander?) (Vompukassi).