Foliose Lichens

Foliose lichens are leaf-like, with an obvious front and back. The two sides may be different colors.

 
A leafy, bright green lichen with red spots on the edges.
An example of a Lobaria lichen.

NPS/C. Vecchio Photo

The Lobarias ("lung lichens") provide a valuable food source for deer and elk. This common lichen can achieve a biomass of up to a ton per 2.5 acres.

 
Two images of leafy lichens, one brown-red (top) and one bright green (bottom).
Two examples of Peltigera lichens: Peltigera membranacea (top) and Peltigera britannica (bottom).

NPS/C. Vecchio Photos

The Peltigeras ("pelt lichens") grow on bark or rock, and are characterized by root-like structures (rhizines) on the backs of their lobes. Several species occur in the park.

 
A leafy, grey-white lichen grows on a tree branch.
Platismatia glauca lichen.

NPS/C. Vecchio Photo

The Platismatias are very limp when fresh, hence their common name of "rag lichens." Normally greenish-grey, they may turn pink with age.

 
Two images of grey-green lichen with tube-like forked branches.
Two examples of Hypogymia lichens. The top photo is Hypogymnia apinnata.

NPS/C. Vecchio Photos

Commonly known as "tube lichens," the Hypogymnias have inflated, hollow lobes and generally display large dish-shaped apothecia.

 
A lichen with round, brownish lobes and darker leaves on a branch.
Nephroma helveticum lichen.

NPS/C. Vecchio Photo

The Nephromas ("kidney lichens") often exhibit a light-colored fringe around their edges.

 
A lumpy grey lichen with darker spots growing on a rock.
Umbilicaria angulata lichen.

NPS/C. Vecchio Photo

Some lichens like this Umbilicaria will only be found growing on rock. Umbilicarias are attached to their substrate at a central point, an "umbilicus."

Last updated: July 13, 2020

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