© Robert Siegel
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Lichens

Lichens by continent

+ North America
+ Europe
+ South America
+ Asia
+ Australia
+ Antarctica
+ Africa
+ Oceania

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Some species on page:

Order: Arthonilaes
Family: Arthoniaceae
+ Baton rouge or Christmas lichen(Herpothallon rubrocincta)
Family: Arthoniaceae (Christmas lichens, comma lichens)
Arthoniaceae: White blanket (Cryptothecia striata)
Order: Lecanorales
Family: Cladoniaceae
+ Coral lichen (Cladia retipora)
Family: Ramalinaceae (bushy lichens, sea fog lichens)
+ Ramalinaceae: Lace lichen (Ramalina menziesii)
Family: Parmeliaceae (shield lichens - beard lichen)
+ Powder-headed tube lichen (Hypogymnia tubulosa)
+ Parmeliaceae: Arizona beard lichen Usnea intermedia
Order: Teloschistales Sunburst Lichens
Family: Teloschistaceae
+ Elegant sunburst lichen (Rusavskia elegans)
Order Peltigerales
Family: Lobariaceae (lung lichens, moon lichens, specklebelly lichens)
+ Lobariaceae: Powderedmoon lichen Sticta limbata
+ Misc

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North America

Baton Rouge lichen

florida
Baton Rouge or Christmas lichen (Herpothallon rubrocinctum)
Family: Arthoniaceae (Christmas lichens, comma lichens)
Loxahatchee
March 30, 2009

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baton rouge lichen
Loxahatchee National Wildlife Refuge
March 30, 2009

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Tree lichen

tree lichen

Photographing Nature reunion field trip
Edgewood Park California
February 28, 2015

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Lichen on leaf

ramalina
Jasper Ridge
October 26, 2013
Photographing Nature class

Lichen walk - December 4, 2015
Skyline Ridge Open Space Reserve - Devil's Canyon

Lichen

skyline

Skyline Ridge Open Space Reserve - Devil's Canyon
December 4, 2015
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skyline

Skyline Preserve
December 4, 2015
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skyline

Skyline Preserve
December 4, 2015
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skyline

Skyline Preserve
December 4, 2015
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skyline

Skyline Preserve
December 4, 2015
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Lichenous milieu

skyline

Skyline Preserve
December 4, 2015
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Lichenous rock

lichenous rock
Lilly Lake hike
Stanford in the Wild
April 29, 2016

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Lichen

lichen
Stanford in the Wild
April 30, 2016
Canon 7Dmark2

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Lichen

pinnacles

Lichen
Pinnacles
December 21, 2017
Canon EOS 7D Mark II

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Powder-headed tube lichen (Hypogymnia tubulosa)

wunderlich

Powder-headed tube lichen (Hypogymnia tubulosa)
Family: ()
Wunderlich Park
July 4, 2020 with Jennifer, Leslie, and Christin
Canon 7Dmark2
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Elegant sunburst lichen (Rusavskia elegans)

alum rock state park 2021

Elegant sunburst lichen (Rusavskia elegans)
Family: Teloschistaceae
Alum Rock State Park
Bioblitz
March 13, 2021
Canon 7dmark2

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Lace lichen (Ramalina menziesii)

A little lace

jasper ridge 2021

Lace lichen (Ramalina menziesii)
Family: Ramalinaceae
Jasper Ridge
With Bob and Jack
June 21, 2021
Canon 7Dmark2

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Moon lichens

san bruno 2021
Powderedmoon lichen Sticta limbata
Family: Lobariaceae (lung lichens, moon lichens, specklebelly lichens)
San Bruno Mountain
Nature Through Photography class trip
July 24, 2021
Canon 7D MarkII

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san bruno 2021
Powderedmoon lichen Sticta limbata
Family: Lobariaceae (lung lichens, moon lichens, specklebelly lichens)
San Bruno Mountain
Nature Through Photography class trip
July 24, 2021
Canon 7D MarkII

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Arizona beard lichen (Usnea intermedia)

Arizona beard lichen

Los Trancos
Arizona beard lichen (Usnea intermedia)
Family: Parmeliaceae (shield lichens)
Los Trancos
March 11, 2023
Canon 7Dmark2

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Central America

Christmas lichen

panama

Christmas lichen (Herpothallon rubrocinctum)
Family: Arthoniaceae (Christmas lichens, comma lichens)
El Valle, Panamá
August 28, 2023
Canon 7D Mark II

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Australia

Coral lichen (Cladia retipora)

Coral out of water

lichen
Coral lichen (Cladia retipora)
Bruny Island, Tasmania
September 1, 2015
Canon 7DMark2

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South America

Branching out in Patagonia

lichen

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Europe

England

White lichen, Tintagel Castle, England

white lichen

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Roof lichens

roof lichens

England
2009

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Antarctica

Lichenous antarctica

lichens

Antarctic Peninsula
December 26, 2013
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Banana belt symbionts

lichens

Antarctic Peninsula
December 26, 2013
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Rockin the Lichens

lichens

Antarctic Peninsula
December 26, 2013
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Lichen

ireland
Lichen
Dunford Fort
Slea Head Drive
Dingle Peninsula, Ireland
September 8, 2017
Canon rebel T5i

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Asia

When lichening strikes

Jiuzhaigou 2017

Jiuzhaigou
May 14, 2017
Canon 7Dmark2

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Africa

Likin' Table Mountain

lichen
Lichens on rock
Table Mountain, Cape Town
April 26, 2013

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What's black and white and red all under?
A black millipede with red feet on white lichens

millipede
Cape Town, Africa
April 20, 2013
Canon 5D mark2

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Lichen rocks

Lichen
Welwitschia Drive
Namibia
January 14, 2016
Canon rebel T5i
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Lichen

Lichen
Welwitschia Drive
Namibia
January 14, 2016
Canon rebel T5i
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Lichen

Lichen
Welwitschia Drive
Namibia
January 14, 2016
Canon rebel T5i
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Lichen

Lichen
Welwitschia Drive
Namibia
January 14, 2016
Canon rebel T5i
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Lichen irony

Lichen
Welwitschia Drive
Namibia
January 14, 2016
Canon rebel T5i
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Additional links

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Last modified: March 21, 2023
Created: April 19, 2009
Contact: siegelr@stanford.edu
All pictures are protected by copyright. Do not use without permission.