![Parmelia sulcata](/administrator/cache/preview/6adece05a4d55c761b48fb750f2775c4.jpg)
A leafy (foliose) lichen that is pollution tolerant and found throughout much of the world.
Parmelia sulcata
![Trentepohlia sp.](/administrator/cache/preview/b84aab058da0e1a77adaf0daebccdc15.jpg)
The yellow coating on the bark is not a lichen, but an algae.
Trentepohlia sp.
![Parmotrema perlatum](/administrator/cache/preview/9ef0d462b43d56649141cdac9c09b4f7.jpg)
Parmotrema perlatum
![Punctelia subrudecta s. str.](/administrator/cache/preview/0b1a9ccaef160449273fbc3734d2fdc0.jpg)
Punctelia subrudecta s. str.
![The yellow lichen in this photo is Xanthoria parietina](/administrator/cache/preview/7f522e8db9bf553e0fbcf08c23ad03ba.jpg)
The yellow lichen in this photo is Xanthoria parietina
![Ramalina fastigiata](/administrator/cache/preview/7824f590271da9028eb9fc46a2f67812.jpg)
Ramalina fastigiata
![Ramalina fastigiata](/administrator/cache/preview/302d57cae56acd58f66edac7274d4a68.jpg)
Ramalina fastigiata
![Melanohalea exasperata](/administrator/cache/preview/f507f5222f51781a96dc91101be072ab.jpg)
Melanohalea exasperata
![Lecanora chlarotera](/administrator/cache/preview/a4cd09d8205a44d5c01aaef67cd207b1.jpg)
Lecanora chlarotera
![Hypogymnia tubulosa](/administrator/cache/preview/c39140fd2f3091681f9bf9271896cb88.jpg)
Hypogymnia tubulosa
![Punctelia jeckeri](/administrator/cache/preview/fbbf3c082bef9b279da24a535071236e.jpg)
Punctelia jeckeri
![Punctelia jeckeri (detail)](/administrator/cache/preview/f1ed9fe1ecf42c0969acd17c4a3c046e.jpg)
Punctelia jeckeri (detail)
![Hypogymnia tubulosa](/administrator/cache/preview/bb272cd20438c32c3bf868d94ede3278.jpg)
Hypogymnia tubulosa
![Baeomyces rufus, the brown beret lichen](/administrator/cache/preview/df516f371c1426e2261166fd8cfcedae.jpg)
Baeomyces rufus, the brown beret lichen
![Baeomyces rufus detail showing "brown berets" or apothecia (bowl-shaped fruiting bodies)](/administrator/cache/preview/9e8d5a85b13e229943677cc12ea29548.jpg)
Baeomyces rufus detail showing "brown berets" or apothecia (bowl-shaped fruiting bodies)
![Parmelia saxatilis, also known as the salted shield lichen or crottle](/administrator/cache/preview/a1c538a59b0470d71531c26e4571da57.jpg)
Parmelia saxatilis, also known as the salted shield lichen or crottle
![Ramalina fraxinea, the cartilage lichen](/administrator/cache/preview/b71581904feee94aff3a80360a794e26.jpg)
Ramalina fraxinea, the cartilage lichen
![Acarospora fuscata](/administrator/cache/preview/4d759a18420ac97ef97e6b421ce1ea74.jpg)
Acarospora fuscata
![The lichen at bottom centre of the photo is Rhizocarpon reductum](/administrator/cache/preview/1743a1ccdd4b27aa2477c5f72ef7867a.jpg)
The centre lichen is unidentified
The lichen at bottom centre of the photo is Rhizocarpon reductum
![Rhizocarpon reductum](/administrator/cache/preview/386002473cb8be0f560ddfbc451616e3.jpg)
Rhizocarpon reductum
![unidentified lichen (detail)](/administrator/cache/preview/9752591bbe0b68400838ed82b99f5e66.jpg)
![Lecanora muralis sometimes known as the chewing gum lichen](/administrator/cache/preview/231dc5b41d08ea35b94f680ee9d773ac.jpg)
Lecanora muralis sometimes known as the chewing gum lichen
![Lecanora muralis (detail)](/administrator/cache/preview/12256dde2d437b62fa9fa9f6d8267f14.jpg)
Lecanora muralis (detail)
![Psilolechia lucida](/administrator/cache/preview/45c7928950c232b03483992f0eadc38c.jpg)
Psilolechia lucida
![Psilolechia lucida (detail)](/administrator/cache/preview/77193ac1f33a32d56f1d3b836c8b2aeb.jpg)
Psilolechia lucida (detail)
![The yellow lichen in this photo is Xanthoria parietina. The grey lichen is Physcia tenella.](/administrator/cache/preview/e6a84ca4e32bdb10eb389b20cc21a80e.jpg)
The yellow lichen in this photo is Xanthoria parietina. The grey lichen is Physcia tenella.
![Xanthoria parietina (detail)](/administrator/cache/preview/063278b93453453b41d2eac3c3519836.jpg)
Xanthoria parietina (detail)