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.
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. Gray. [1913 Webster]