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0 1 Shield lichen

Shield lichen

by caldasrafaTui, Galicia, Spain

2 0 Net-marked Parmelia

Net-marked Parmelia

by MachiKodiak, Alaska, USA

Or possibly Parmelia omphalodes

1 0 Shield lichen

Shield lichen

by caldasrafaTui, Galicia, Spain

3 0 Shield Lichen

Shield Lichen

by MachiKodiak, Alaska, USA

More deeply lobed than Parmelia hygrophila.

1 0 Shield lichen

Shield lichen

by Brian38Washington, USA

A pale gray foliose lichen with lobes at the margins.

0 0 Shield Lichen

Shield Lichen

by MattCampbellHalifax Regional Municipality, Nova Scotia, Canada

Found on a tree in Bedford, NS

1 0 Net-marked parmelia

Net-marked parmelia

by Brian38Federal Way, Washington, USA

A light green to grey (leafy-looking) folios lichen.

5 1 Shield Lichen

Shield Lichen

by MachiMaine, USA

Brown apothecia, lots of isidia present, gray thallus

3 0 Net-marked Parmelia

Net-marked Parmelia

by MachiKodiak, Alaska, USA

Black rhizines and a gray, isidiate thallus

1 0 Net-marked Parmelia

Net-marked Parmelia

by MachiKodiak, Alaska, USA

Gray-green, wrinkled thallus with a brown underside

1 1 Net-marked Lichen

Net-marked Lichen

by CodyRyanHoughPortage, Michigan, USA

2 7 Parmotrema austrosinense

Parmotrema austrosinense

by MayraSpringmannAvaré, São Paulo, Brazil

0 0 Lichen

Lichen

by injicaZagreb, Croatia

Possibly Parmelia sp. ?

1 0 Shield Lichen

Shield Lichen

by 20jengMaryland, USA

1 0 Net-marked parmelia

Net-marked parmelia

by Brian38Washington, USA

Net-marked parmelia (

0 0 Shield lichen

Shield lichen

by Ryan.ChampinySalem, New Hampshire, USA

lichens are a combination of a fungus and a photobiont that exist in a ...

0 0 Shield Lichen

Shield Lichen

by KimLommanMirrormont, Washington, USA

Found on a dead branch covered in moss near a dirt road in a heavily wooded ...

1 2 Lichen

Lichen

by JimJohnson2Pennsylvania, USA

I'm terrible at lichens, but this looks like the closest match I could find.

2 2 Net-marked lichen

Net-marked lichen

by misako.hillRichmond, California, USA

This is the first lichen I have spotted and and not certain of the species. ...

1 0 Shield lichen

Shield lichen

by Brian38Washington, USA

Net-marked parmelia (

2 0 lichen

lichen

by Hema ShahCalifornia, USA

lichen seen on rock used for garden decor

0 0 Shield Lichen

Shield Lichen

by MachiMaine, USA

Growing among Physcia aipolia

0 0 Waxpaper lichen

Waxpaper lichen

by Brian38Tukwila, Washington, USA

Parmelia sulcata is a foliose lichen with a ...

0 0 Smoky Crottle

Smoky Crottle

by MachiKodiak, Alaska, USA

Large boulder on top of Pillar Mountain

0 0 Net-marked Parmelia

Net-marked Parmelia

by MachiMaine, USA

Lichen radiating in a nice round clump

0 0 Shield Lichen

Shield Lichen

by MachiMaine, USA

Black rhizines, branching gray thallus growing flat to the tree

0 0 Net-marked parmelia

Net-marked parmelia

by arlandaMadrid, Madrid, Spain

Thallus foliose, blue-grey (becoming bronze when old and semi-moribund), with ...

1 0 Shield lichen

Shield lichen

by Brian38Federal Way, Washington, USA

Net-marked parmelia (

1 0 Salted shield lichen

Salted shield lichen

by Brian38La Conner, Washington, United States

A folios lichen that is mostly gray with brown margins and a salty like ...

0 2 lichenicolous fungi

lichenicolous fungi

by p.young713Tampa, Florida, USA

Growing on the North side of a tree.

0 0 Net-marked parmelia, lichen

Net-marked parmelia, lichen

by arlandaMadrid, Madrid, Spain

Thallus foliose, blue-grey (becoming bronze when old and semi-moribund), with ...

0 0 wax paper lichen

wax paper lichen

by james.branson.206Burien, Washington, USA

Douglas-fir branch in Eagle Landing Park.

0 0 Hammered Shield Lichen

Hammered Shield Lichen

by KatherineDGuelph, Ontario, Canada

Found in the Guelph Arboretum on a tulip tree.

0 0 Foliaceous lichen species

Foliaceous lichen species

by LipaseEngland, United Kingdom

growing on a rhododendron leaf

2 5 Shield Lichen

Shield Lichen

by Malcolm Wilton-JonesEngland, United Kingdom

Bars of an old wooden bridge in park on flood plain.

1 0 Hammered Shield Lichen

Hammered Shield Lichen

by Brian38Washington, USA

A light green to grey lichen that is flat and lobed. Generally fans out from ...

0 0 Cracked-shield lichen

Cracked-shield lichen

by arne.royslandOslo, Norway

A foliose lichen with rosette form.

0 0 Foliose Lichen

Foliose Lichen

by Elton_WizardPennsylvania, USA

alga. They are usually classified according to the fungal component, in this ...

0 0 Salted Shield

Salted Shield

by doreen.chambers.14Vermont, USA

Grows on rock. This is the most common

4 2 Hammered Shield Lichen

Hammered Shield Lichen

by doreen.chambers.14Vermont, USA

Hammered Shield Lichen with ice crystals formed from the moisture.. Lichen has ...

1 2 Parmelia sulcata?

Parmelia sulcata?

by KathleenMcEachern

tubular lichen loosely growing on a dead branch lying in the leafy forest duff.

0 6 Parmelia quercina

Parmelia quercina

by arlandaMadrid, Madrid, Spain

The apotecia of Parmelia quercina have a ...

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