Foxglove

According to European folklore, fairies live in foxglove (Digitalis purpurea), a flowering shrub most commonly purple, pink, white or yellow. Also known as "fairy-folks-fingers," these beautiful perennials have a practical use for humans aside from their function as dwellings for magical folk: they contain an antiarrhythmic agent that is an ingredient in heart medicine. Despite their medicinal qualities, it is not advisable to ingest foxglove in the wild as it is quite toxic and can be fatal, which may be the reason it is also variously known as "bloody fingers," "deadman's bells," and "witches' gloves."