devil's nettle

In some parts of England the general name for Ferns is Devil’s Brushes, while in Cheshire, where the children draw the Yarrow across their faces and experience a tingling sensation in consequence, that plant is called the Devil’s Nettle.

But be careful what you are about, for overhead is the terrible Laportea crenulata, or devil’s nettle; the petioles of the leaves are hispid with poisonous hairs, the sting of which, once felt, will not be forgotten by you in a hurry;