lichens something off of something else is a length of example for removing something from something else
map_lichen is not lichen. lichen is fungus. map_lichen is lichen. parmelia_lichen is not lichen. pseudevernia_furfuracea is lichen. parmelia_lichen is lichen. lichen is living_organism. lichen is not fungus. lichen is not living_organism. graphis_alboscripta is lichen.