This is a very brief listing of lichens to be found west of the Cascade Mountains of Oregon and Washington.
Foliose (leaf-like) Lichens:
Lettuce Lichen, Oregon Lungwort: Lobaria oregana
Lung Lichen, Lung Moss, Lungwort Lichen, Oak Lungs, Oak Lungwort, Tree Lungwort: Lobaria pulmonaria (Synonym: Sticta pulmonaria)
Common Dog Lichen: Peltigera membranacea
Fruticose (shrub-like) Lichens:
Seaside Bone Lichen, Tube Lichen: Hypogymnia heterophylla
Old Man's Beard, Methuselah's Beard Lichen: Dolichousnea longissima (Synonym: Usnea longissima)
Tuckermann's Coral Lichen, Tuckermann's Ball-bearing Lichen: Sphaerophorus tuckermanii
Crustose Lichens:
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