Lichens of the Pacific Northwest - Oregon USA
Lichen information:

Lichen, usually pronounced Like-in/Laikan, is a composite
organism where fungus associates with green algae or
cyanobacteria, which is capable of photosynthesis. This is a
symbiotic union creating unique and incredibly varied shapes and
sizes. There are over 3,600 species of lichen in North America
alone. They are very sensitive to air pollution, and are often absent
from cities.

They are not biologically similar to plants, and are very different
than mosses, liverworts and other algae and free-living fungi (like

Fungus covers the algae cells within them, providing a habitat and
shading them from harsh sunlight. The fungus feeds off the algae
and the food it produces. The algae feeds itself by photosynthesis
(the process of creating food, sugar, from carbon dioxide, using
the energy from sunlight.) The fungus allows the algae to survive in
places it would normally not live, and the algae cells multiply faster
than the fungus can eat it.

I highly recommend doing a google search for "Lichen" for more
information. I also recommend the following books:

Lichens of North America" by Irwin Brodo, Sylvia and Stephen
Sharnoff. This is the largest book on lichens, nearly 800 pages of
large full color photographs and easy to understand language for
the non-scientific person. It also has incredibly helpful maps of the
locations of each type of lichen covered, which is about 1,500

Regional books: "
Lichens of the North Woods" by Joe Walewski,
and "
Macrolichens of the Pacific Northwest" by Bruce McCune
and Linda Geiser.

While I strive for accuracy, and have put a lot of time into
comparing my photographs with books on lichens, I may make
mistakes. If you happen to notice an incorrectly labeled lichen,
email me at

Thank you  :)
Kimberly Crick- Professional Artist and Craftsperson, Amateur
Lichenologist and Photographer.
This page includes the following lichens:
Aspicilia cinerea (Cinder Lichen)
2) Candelariella vitellina (Common Goldspeck)
3) Evernia prunastri (Oakmoss Lichen)
4) Hypogymnia imshaugii (Forked Tube Lichen)
5) Hypogymnia physodes (Monk's Hood/Puffed Lichen)
6) Cladonia chlorophaea (Mealy Pixie-Cup Lichen)
7) Cladonia Coniocraea (Common Powderhorn Lichen)
8) *Yet to be identified. What appears to be light green paint on tree bark. Do you know? Email -
9) Parmelia sulcata (Hammered Shield Lichen)
10) Peltigera collina (Tree Pelt Lichen)
11) Peltigera Membranacea (Membranous Dog Lichen)
12) Platismatia glauca (Ragbag Lichen)
13) Usnea longissima (Methuselah's Beard Lichen)
14) Xanthoria candelaria (Shrubby Sunburst Lichen)
15) Xanthoria polycarpa (Pin-Cushion Sunburst Lichen)

Note: In the rare event that lichens were removed from nature, they were taken from large colonies, with care to leave a remaining part of the lichen intact. Please
do not pick Usnea (Beard Lichens) from nature, as they are becoming rarer by the day due to air pollution.

If you'd like to use my pictures on your website or blog, please include link credit to:
Comments or Questions? Email:
Tree lichens Pacific Northwest Oregon Photograph by Kimberly Crick
Tree lichens Pacific Northwest Oregon Photograph by Kimberly Crick
Hypogymnia physodes Monk's Hood Hooded Tube Puffed Lichen
Evernia Prunastri Oakmoss Lichen Forest Oregon Pacific Northwest
Hypogymnia imshaugii Forking Bone Lichen Forking Tube Lichens Pacific Northwest Lichenology
Evernia Prunastri Oakmoss Lichen
Evernia Prunastri Oakmoss Lichen
Pictures taken at Cooper Mountain Nature Park in Beaverton, Oregon
Above: Orange - Xanthoria polycarpa (Pin-Cushion Sunburst Lichen), Yellow - Candelariella vitellina (Common Goldspeck), White
with black spots - Aspicilia cinerea (Cinder Lichen).
Above: Upper left -           , Parmelia sulcata (Hammered Shield Lichen), Usnea longissima (Methuselah's Beard Lichen), and some
Evernia prunastri (Oakmoss Lichen)
Above: Evernia prunastri (Oakmoss Lichen), Parmelia sulcata (Hammered Shield), and Usnea longissima (Methuselah's Beard).
Evernia prunastri (Oakmoss Lichen)
Evernia prunastri (Oakmoss Lichen)
It looks like a face! Platismatia glauca (Ragbag Lichen)
Cladonia chlorophaea (Mealy Pixie-Cup Lichen)
Above: Hypogymnia imshaugii (Forked Tube Lichen), lower on branch - Parmelia sulcata (Hammered Shield Lichen).
Above: The deep green in the center is moss, Parmelia sulcata (Hammered Shield Lichen) close to the branch and Usnea
longissima (Methuselah's Beard Lichen) which is the longer light green strands.
Right side, without trumpet heads, is Cladonia Coniocraea
(Common Powderhorn Lichen).
Close up:
Parmelia sulcata (Hammered Shield Lichen), Moss, and Usnea longissima
(Methuselah's Beard Lichen).
The tiny lichens on this branch are: ?
Above: The long strands in the center are Usnea longissima (Methuselah's Beard Lichen) which vary greatly in length, but in places with good air
quality and proper conditions this variety grows very long. Parmelia sulcata (Hammered Shield Lichen) also occupy this branch.
Above: Parmelia sulcata (Hammered Shield Lichen)
Above:  Yellow with orange centers - Xanthoria candelaria (Shrubby Sunburst Lichen), along with strands of Evernia prunastri
(Oakmoss Lichen) and a few small patches of Parmelia sulcata (Hammered Shield Lichen).
Left & Right: In these two photographs we are looking at a tree stump
with Cladonia lichen on top shooting upwards. The small bright green
shelves are also part of the same lichen. These tiny wrinkled shelf
looking lichen are Cladonia Coniocraea (Common Powderhorn
Lichen) without the upward growth.

(The rest of the green fur/fern looking growths are moss.)
Cladonia chlorophaea (Mealy Pixie-Cup Lichen)
Hypogymnia physodes (Monk's Hood/Puffed Lichen)
Peltigera collina (Tree Pelt Lichen)
Peltigera Membranacea
(Membranous Dog Lichen) Gotta love that name :)
*I have not yet identified this, what looks like light green paint on the tree bark.
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