Smooth Rock Tripe

Umbilicaria mammulata

''Umbilicaria mammulata'', or Smooth Rock Tripe, is a foliose lichen found on boulders and rock walls.
Smooth Rock Tripe Large foliose lichen that was green on top and black underneath. U. mammulata is one of the largest lichens in the world. The thallus can be up to 15cm in diameter. The largest in this spotting was approximately 5cm. Fall,Geotagged,Smooth Rock Tripe,Umbilicaria mammulata,United States,lichen,tripe

Appearance

''U. mammulata'' is among the largest lichens in the world. The thallus of ''U. mammulata'' is usually 4 to 15 centimeters in diameter, but specimens have been known to reach 63-centimetre in the Smoky Mountains of Tennessee. The smooth upper surface is a reddish-brown to grayish-brown color and the lower surface is pitch black.
Smooth Rock Tripe - Umbilicaria mammulata Large, foliose lichen that was very pale green on top and black underneath.

*U. mammulata is one of the largest lichens in the world. The thallus can be up to 15cm in diameter.

Habitat: Covering rocks in a deciduous forest Geotagged,Smooth Rock Tripe,Summer,Umbilicaria mammulata,United States,lichen

Habitat

This species is found on boulders and steep rock walls in forests and around lakes. It grows on several types of rock substrate, such as acid rock, sandstone, quartz, and granitic rock. Like most lichens, ''U. mammulata'' is sensitive to air and water quality. If conditions are optimal, seeing rocks or cliffs covered in dinner plate sized thalli is not unusual. However, it has been suggested that ''U. mammulata'' is not as sensitive to pH and water quality as it is to the frequency and duration of precipitation.

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Taxonomy
KingdomFungi
DivisionAscomycota
ClassLecanoromycetes
OrderUmbilicariales
FamilyUmbilicariaceae
GenusUmbilicaria
SpeciesU. mammulata