Assertion: lichen's body | /r/HasProperty | exposed to the air
Facets:
Source sentences:
text: A crustose lichen that grows on rock is called a saxicolous lichen.:159 Crustose lichens that grow on the rock are epilithic, and those that grow immersed inside rock, growing between the crystals with only their fruiting bodies exposed to the air, are called endolithic lichens.:159