




parmeliaceae
Shield lichens are fascinating organisms that help break down rocks and create soil. They come in many colors and can often be found growing on tree bark and rocks in forests.
Habitat: Forests, rocky areas, and on tree bark.
The Shield Lichens And Allies are typically flattened, broad, and leaf-like, adhering tightly to surfaces. They often appear grey-green, brown, or black, sometimes with distinct lobe-like structures at their edges, distinguishing them from crusty lichens.





Category
FungiRarity
Common
Danger
0/5 · No known danger
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Reindeer and caribou rely on certain lichens for food, especially during harsh winters.
Some shield lichens can live for over 1,000 years, growing incredibly slowly!
They are so tough some lichens can survive in the harsh environment of outer space!
They don't have roots; they absorb all their water and food directly from the air!
Shield Lichens can dry completely and 'come back to life' later, surviving harsh, dry conditions.
They absorb everything from the air, making them natural indicators of pollution levels.
These lichens can slowly break down rocks, helping to create new soil over centuries.
Shield Lichens are actually two organisms, a fungus and an alga, working together for survival.
Parmelia sulcata
The fungal component of a common shield lichen
Trebouxia erici
A green alga that photosynthesizes within many lichens
Rangifer tarandus
Specific lichens are a crucial food source for these large mammals
Arthonia varians
A specific fungus that grows on and feeds on other lichens
Solitary animals live alone for most of their lives, only interacting with others for mating or parental care.
Camouflaged describes organisms that possess coloring or patterns that allow them to blend into their environment.
Colorful describes organisms or objects displaying a wide range of bright and distinct colors.
Describes organisms that break down dead organic material, recycling nutrients back into the ecosystem.
Forest habitats are terrestrial environments dominated by dense tree cover, supporting a high diversity of plant and animal life.
No aliases listed yet.
Danger
0/5 · No known danger
No special safety notes yet.
0.5-5 cm
inedible
Forests, rocky areas, and on tree bark.
other
Year-round
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