Pulmonaria officinalis

Lungwort Lung"wort`, n. (Bot.) (a) An herb of the genus {Pulmonaria} ({Pulmonaria officinalis}), of Europe; -- so called because the spotted appearance of the leaves resembles that of a diseased lung. (b) Any plant of the genus {Mertensia} (esp. {Mertensia Virginica} and {Mertensia Sibirica}), plants nearly related to {Pulmonaria}. The American lungwort is {Mertensia Virginica}, Virginia cowslip. --Gray. [1913 Webster]

{Cow's lungwort} mullein.

{Sea lungwort}, {Mertensia maritima}, found on the seacoast of Northern Europe and America.

{Tree lungwort}, a lichen ({Sticta pulmonacea}) growing on trees and rocks. The thallus is lacunose, and in appearance somewhat resembles the lungs, for diseases of which it was once thought a remedy. [1913 Webster]