United States Forest Service
National Lichens & Air Quality Database and Clearinghouse
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Lichen Photographs
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Conditions of Photograph Use
Evernia prunastri
Flavocetraria cucullata
Flavocetraria cucullata
Flavocetraria nivalis
Flavopunctelia soredica
Fuscopannaria
Fuscopannaria saubinetii
Graphis scripta
Hydrotheria venosa
Hydrothyria venosa
Hypogymnia apinata
Hypogymnia duplicata
Hypogymnia enteromorpha
Hypogymnia imshaugii
Hypogymnia inactiva
Hypogymnia inactiva
Hypogymnia occidentalis
Hypogymnia oceanica
Hypogymnia physodes
Hypotrachyna revoluta
Hypotrachyna riparia
Hypotrachyna sinuosa
Hypotrachyna sinuosa
Icmadophila ericetorum
Icmadophila ericetorum
Lecanora argopholis
Lecanora bicincta
Lecanora muralis
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