Usnea
ExploreFungi
Usnea
Usnea
Usnea is a type of lichen that grows on trees. It looks like a fuzzy green or gray beard hanging from branches. Lichens like Usnea are a sign of clean air in the forest.
Habitat: Forests
Appearance
The Usnea has a stringy, bushy, or pendulous form, typically grayish-green. It visually differs from other hanging lichens by its distinctive, stretchy white elastic core, visible when gently pulled apart.
KingdomFungiPhylumAscomycetesClassLecanoromycetesOrderLecanoralesFamilyParmeliaceaeGenusUsnea
Category
FungiRarity
Common
Danger
1/5 · Very low
Snaps
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Interesting facts
Inside, Usnea has a unique, stretchy white core, like a tiny elastic band!
It produces special acids to stop bacteria and fungi from growing!
People have used Usnea for thousands of years in traditional medicines and dyes!
Some Usnea live for hundreds of years, making them super ancient organisms!
Special abilities
Ability
Air Filter Power
Usnea can absorb pollutants from the air, helping scientists understand the health of our environment.
Ability
Sun Energy Creator
Usnea has tiny partners inside that make their own food from sunlight, just like plants!
Ability
Weatherproof Protector
Usnea can dry out completely and then rehydrate to continue growing, surviving harsh conditions.
Ability
Stretchy Support System
Usnea has a strong, flexible inner core that helps it hang tough against wind and weather.
Measurements & details
- Height
- 5-50 cm
- Edibility
- inedible
- Growth Substrate
- wood
- Season
- Year-round
Ecological connections
symbiotic with
Green Alga
Trebouxia arboricola
provides food for the fungus
eaten by
Caribou
Rangifer tarandus
a vital winter food source
eats
Black Slug
Arion ater
grazes on its surface
shelters
Blue Jay
Cyanocitta cristata
uses Usnea for nesting material
Traits
Lichen
This trait describes a composite organism resulting from a symbiotic association between a fungus and a photosynthetic partner, typically an alga or cyanobacterium.
Evergreen
Evergreen plants retain their foliage throughout the year, never shedding all their leaves at once.
Medicinal
Medicinal plants possess chemical compounds that can be used for therapeutic purposes to treat illnesses or maintain health.
Ancient Lineage
This trait signifies organisms belonging to a very old evolutionary group with ancestors dating back millions of years.
Forest
Forest habitats are terrestrial environments dominated by dense tree cover, supporting a high diversity of plant and animal life.
Also known as
Beard Lichen
Collections
Safety
Danger
1/5 · Very low
Usnea is safe to observe but avoid touching or picking it.
Frequently Asked Questions
How tall is Usnea?
5-50 cm
Is Usnea edible?
inedible
Where is Usnea usually found?
Forests
What does Usnea grow on?
wood
When is Usnea in season?
Year-round
Snap Map
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