The mòthan, the trailing pearlwort (sagina procumbens), was placed by old women in Tiree above the door, on the lintel, to prevent the spirits of the dead, when they revisited their former homes, from entering the house.
- Campbell, J.G. (1902). Witchcraft & Second Sight in the Highlands & Islands of Scotland. Glascow: James MacLehose and Sons, pp. 172-173.