Lungwort

The Viper's Bugloss is called botanically Echium, having been formerly considered antidotal to the bite of (Echis) a viper: and its seed was thought to resemble the reptile's head: wherefore such a curative virtue became attributed to it after the doctrine of signatures. "In Echio, herba contra viperarum morsus celeberrima, natura semen viperinis capitibus simile procreavit." Similarly the Lungwort (or Jerusalem Cowslip), because of its spotted leaves, was held to be a remedy for diseased lungs.

Herbal Simples Approved for Modern Uses of Cure by William Thomas Fernie M.D. (1897)

Pulmonaria officinalis

Pulmonaria officinalis is an evergreen perennial species of lungwort, native to locations throughout Europe.

P. officinalis is a rhizomatous plant in the Borage family. In spring, it produces small bunches of pink flowers which turn to blue-purple. The plant has been cultivated for centuries as a medicinal herb, the ovate spotted leaves held to be representative of diseased lungs, following the Doctrine of Signatures.