The Harebell is common throughout the Burren, blooming profusely on road verges and limestone pavements. The flower color is always sky blue on stems to 30 cm in height. According to folklore, harebells belong to, and are jealously protected by, the “Little People”. Thus it may be unlucky to pick them and hence their other name in Irish, méaracán púca, goblin’s thimble.
(From “The wild plants of the Burren and the Aran Islands” by Charles Nelson).