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]