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
see also:
pulmonaria pulmonaria officinalis mertensia mertensia virginica mertensia sibirica mertensia virginica 
cow's lungwort sea lungwort mertensia maritima tree lungwort sticta pulmonacea