The Folk-lore of Plants

When engaged in their various occupations they often considered it expedient to escape detection by assuming invisibility, and for this object sought the assistance of certain plants, such as the fern-seed[17]. In Sweden, hazel-nuts were supposed to have the power of making invisible, and it may be remembered how in one of Andersen's stories the elfin princess has the faculty of vanishing at will, by putting a wand in her mouth.[18] But these were not the only plants supposed to confer invisibility, for German folk-lore tells us how the far-famed luck-flower was endowed with the same wonderful property; and by the ancients the heliotrope was credited with a similar virtue, but which Boccaccio, in his humorous tale of Calandrino in the "Decameron," applies to the so-called stone. "Heliotrope is a stone of such extraordinary virtue that the bearer of it is effectually concealed from the sight of all present." Dante in his "Inferno," xxiv. 92, further alludes to it: "Amid this dread exuberance of woe Ran naked spirits winged with horrid fear, Nor hope had they of crevice where to hide, Or heliotrope to charm them out of view." In the same way the agate was said to render a person invisible, and to turn the swords of foes against themselves.[19] The Swiss peasants affirm that the Ascension Day wreaths of the amaranth make the wearer invisible, and in the Tyrol the mistletoe is credited with this property.