Usnea, Beard lichen, tree’s dandruff, woman’s long hair, or tree moss, Beard Moss

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Usnea, also known as Beard lichen, tree’s dandruff, woman’s long hair, or tree moss, old man’s beard, Beard Moss, Mousse D Arbre, oak moss, Sodium Usniate, Usnea Barbata, Usnea Florida, Usnea Hirta, Usnea Lichen is a lichen, a symbiotic relationship between an algae and fungus. The fungus...

For severe symptoms, danger signs, pregnancy, child illness, or sudden worsening, seek urgent medical care.

বাংলা রোগী নোট এখনো যোগ করা হয়নি। পোস্ট এডিটরে “RX Bangla Patient Mode” বক্স থেকে সহজ বাংলা সারাংশ যোগ করুন।

এই তথ্য শিক্ষা ও সচেতনতার জন্য। এটি ডাক্তারি পরীক্ষা, রোগ নির্ণয় বা প্রেসক্রিপশনের বিকল্প নয়।

Article Summary

Usnea, also known as Beard lichen, tree’s dandruff, woman’s long hair, or tree moss, old man’s beard, Beard Moss, Mousse D Arbre, oak moss, Sodium Usniate, Usnea Barbata, Usnea Florida, Usnea Hirta, Usnea Lichen is a lichen, a symbiotic relationship between an algae and fungus. The fungus belongs to the division Ascomycota, while the alga is a member of the division Chlorophyta. Usnea looks like long, fuzzy...

Key Takeaways

  • This article explains Usnea Scientific Classification in simple medical language.
  • This article explains Health benefits of Usnea in simple medical language.
  • This article explains Other Traditional uses and benefits of Usnea in simple medical language.
  • This article explains Types in simple medical language.
Educational health guideWritten for patient understanding and clinical awareness.
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Emergency safety firstUrgent warning signs are highlighted below.

Seek urgent medical care if you notice

These warning signs are general safety guidance. Local emergency numbers and clinical judgment should always come first.

  • Severe symptoms, breathing difficulty, fainting, confusion, or rapidly worsening illness.
  • New weakness, severe pain, high fever, or symptoms after a serious injury.
  • Any symptom that feels urgent, unusual, or unsafe for the patient.
1

Emergency now

Use emergency care for severe, sudden, rapidly worsening, or life-threatening symptoms.

2

See a doctor

Book a professional medical evaluation if symptoms persist, worsen, recur often, affect daily activities, or occur in a high-risk patient.

3

Learn safely

Use this article to understand possible causes, tests, treatment options, prevention, and questions to ask your clinician.

Usnea, also known as Beard lichen, tree’s dandruff, woman’s long hair, or tree moss, old man’s beard, Beard Moss, Mousse D Arbre, oak moss, Sodium Usniate, Usnea Barbata, Usnea Florida, Usnea Hirta, Usnea Lichen is a lichen, a symbiotic relationship between an algae and fungus. The fungus belongs to the division Ascomycota, while the alga is a member of the division Chlorophyta. Usnea looks like long, fuzzy strings hanging from trees in the forests of North America and Europe, where it grows. The entire lichen is used medicinally. It is the green tangly mass that hangs down from the dead trunks and branches of trees, particularly pine trees, occasionally called “old man’s beard.”

Usnea Facts

NameUsnea
Scientific NameUsnea
NativeNorth America
Common NamesTree’s dandruff, woman’s long hair, or tree moss, old man’s beard, or beard lichen, Beard Moss, Mousse D Arbre, oak moss, Sodium Usniate, Usnea Barbata, Usnea Florida, Usnea Hirta, Usnea Lichen
Name in Other LanguagesChinese: Songluo
Dutch: Baardmos
English: Beard lichen, old man’s beard
Finnish: Naavat
Plant Growth HabitSlow growing lichen
Growing ClimateFound growing all over the temperate zones in the northern hemisphere, particularly in the coastal rainforest and sub-arctic regions. usually grow on tree branches and prefers moist habitats.
Plant SizeAbout 3 cm
Usnea ShapeThready filaments that resemble coarse hair, stretchy like elastic if you tug gently on its strands.
Usnea ColorLight green, grey or yellowish in color
Inner PartWhite to yellow
Outer PartGreen to grey
TasteBitter
Plants Parts UsedWhole Lichens
Available FormsBulk form or as a powder, capsule, or tincture
Varieties
  • Usnea arizonica
  • Usnea articulata
  • Usnea australis
  • Usnea baileyi
  • Usnea californica
  • Usnea capillaris
  • Usnea catenulata
  • Usnea cavernosa
  • Usnea ceratina
  • Usnea ciliifera
  • Usnea cirrosa
  • Usnea condensata

And many more….

Health Benefits
  • Antibacterial benefits
  • Antiviral benefits
  • Antifungal benefits
  • Healing Wounds

 

Usnea Scientific Classification

Scientific Name:Usnea

RankScientific Name & (Common Name)
KingdomFungi (Fungi)
SubkingdomDikarya
DivisionAscomycota (Sac fungi)
Sub DivisionPezizomycotina
ClassLecanoromycetes
SubclassLecanoromycetidae
OrderLecanorales
FamilyParmeliaceae
GenusUsnea Dill. ex Adans. (beard lichen)
Synonyms
  • Usnea Dillenius ex Adanson
  • Usnea aspera (Eschweiler) Vainio
  • Usnea bicolor (Ehrhart) Hoffmann
  • Usnea canariensis (Acharius) Du Rietz
  • Usnea chalybeiformis (Linnaeus) Baumgarten
  • Usnea cladonioides (Nylander) Du Rietz
  • Usnea farinosa (Müller Arg.) Zahlbruckner
  • Usnea hispidula (Müller Arg.) Zahlbruckner
  • Usnea horrescens (Taylor) Motyka
  • Usnea implexa (Hoffmann) Hoffmann
  • Usnea ochroleuca Hoffmann
  • Usnea plicata var. glabrata Acharius
  • Usnea plicata var. hirta (Linnaeus) Acharius
  • Usnea smithii Du Rietz
  • Usnea subcapillaris (D. J. Galloway) F. J. Walker
  • Usnea subgen. Dolichousnea Y. Ohmura
  • Usnea subgen. Lethariella Motyka
  • Usnea subgen. Protousnea Motyka
  • Usnea torrefacta (Lightfoot) Schrader
  • Usnea zahlbruckneri Du Rietz

Plant

Usnea is slow growing lichen about 3 cm tall. It is found growing all over the temperate zones in the northern hemisphere, particularly in the coastal rainforest and sub-arctic regions. It usually grows on tree branches and prefers moist habitats. It is the green tangly mass that hangs down from the dead trunks and branches of trees, especially pine trees. Usneas have a double filament, with an inner core of white to yellow, and an outer portion that is green to grey; the green is contributed by the algae’s chlorophyll. Usnea may be whitish, reddish, or black. The plant body of usnea is used to make medicine. They are bright red and yellow, and grow on rocks. They are long wispy strands of gray-green hair, hanging like beards from hardwood trees in rainy forests. Or they are floppy and leaf-like.

Health benefits of Usnea

Usnea is a type of lichen that grows on trees. Though lichens appear to be single plants, they are really a combination of fungus and algae that grow together for their mutual benefit. Lichens grow in colorful, flat patches. Usnea may be whitish, reddish, or black. The plant body of usnea is used to make medicine. For years now, Usnea has proven to have quite a number of medical uses. Some of the medical uses of Usnea include:

1. Antibacterial benefits

Usnea is popular for its antibacterial properties. Research has discovered that the lichen kills bacteria particularly the bacteria that are found in the digestive tract. Further studies reveal that it is in fact extremely beneficial to humans as it does not kill all kinds of bacteria and may leave the bacteria that are useful to the digestive tract unharmed. Usnea can be used to efficiently cure several conditions caused by gram positive bacteria. Some of the bacteria that it acts against effectively include Staph (Staphylococcus simulans and S. Aureus). It also acts against Streptococcus. By only killing the gram positive bacteria, it is a great way of eliminating bacteria without harming the beneficial bacteria.

2. Antiviral benefits

As we all know that viruses are microscopic and live within the cells, they are pretty hard to get rid of once they attack. This is another medical benefit of Usnea. Regularly taking the herb helps in clearing the body of a wide range of viruses. It helps to clears viruses from the bronchial area and the lungs.

3. Anti fungal benefits

Usnea is quite beneficial in clearing antifungal infections. Usnea has been researched to effectively cure several types of fungal infections, Candida species included. For its antifungal uses, the herb can be used both internally and topically, depending on how it is available and how it is favored.

4. Healing Wounds

Usnea is a fantastic choice for wounds. As we’ve seen, it is a powerful antimicrobial herb. Using usnea herb in wounds can help treat or prevent infection. It also has wound-healing abilities that can accelerate the healing process. To use usnea on a wound you might try it as a powdered herb or, if the wound is not infected, as a salve.

Other Traditional uses and benefits of Usnea

  • It is good for sore throats and skin infections.
  • It is also effective against a bacterium that usually causes pneumonia.
  • Due to its bitter taste, usnea encourages digestion and was historically used by herbalists to treat indigestion.
  • It was also reportedly used over 3,000 years ago in ancient Egypt, Greece, and China to treat unspecified infections.
  • Usnea is a wonderful remedy for cellulitis or infected wounds.
  • It is used in the treatment of bronchitis and as part of herbal cancer therapy, particularly for cases of thyroid cancers in China.
  • It is used to heal respiratory and sinus infections, pneumonia, profuse phlegm, strep throat, colds, flus, as well as, urinary tract, kidney, and bladder infections.
  • It has been used traditionally for treating headaches, ocular irritation, malaria, scorfula, leucorrhea, bleeding, carbuncle and toxic snake bite.
  • It is beneficial for people with chronic fatigue syndrome, HIV, herpes, and other chronic conditions related with depressed immunity.
  • This herb can be used to heal lung illnesses such as Bronchitis, wet or dry coughs, or other upper respiratory problems.
  • Topically, it can be used to heal numerous infections.
  • It is beneficial for women with yeast infections trichonomosas, bacterial vaginosis, and chlamydia, and is used to treat other fungal infections like athlete’s foot and infected wounds.
  • To use topically, mix one part Usnea with five parts of heavy stock cream or jelly to make an antibacterial cream.

Other Facts

  • Usnea species have been used to create orange, yellow, green, blue and purple dyes for textiles.
  • Usnea barbata has been used in cosmetic production for its antimicrobial and antifungal properties as a preservative and deodorant.
  • It can be used in mouthwashes, gargles and lozenges, for infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation of the oral mucus membranes.
  • City trees rarely have usnea because it is very sensitive to air pollution.
  • Because of the absorbent quality of usnea, it has been used in baby diapers, wound dressings, and feminine napkins.

Culinary Uses

  • Inland Dena’ina Natives of Alaska occasionally eat Usnea as an emergency food or camp food after first boiling it in water.

Dosages

Usnea is commercially available in bulk form or as a powder, capsule, or tincture.

The tincture must be diluted in water before ingesting or using externally. Usnea tincture may be taken every two hours to treat bacterial infections. Other sources recommend taking 3-4 ml of tincture three times daily.

An usnea tea can be prepared by steeping 2-3 tsp of dried lichen or 1-2 tsp of powdered lichen in 1 cup of boiling-hot water. The tea may be taken three times a day.

In the capsule form, the patient should take 100 mg of usnea three times a day.

Usnea is used externally to treat fungal infections and skin ulcers. It can also be used as a douche to treat cystitis, urinary tract infections, and vaginal infections. Usnea is generally used as a vaginal suppository to treat mild cervical dysplasia. It is taken by mouth to treat colds, strep throat, influenza, sore throats, respiratory infections, and gastrointestinal disorders.

Types

There are about 86 species of Usnea.

  • Usnea arizonica
  • Usnea articulata
  • Usnea australis
  • Usnea baileyi
  • Usnea californica
  • Usnea capillaris
  • Usnea catenulata
  • Usnea cavernosa
  • Usnea ceratina
  • Usnea ciliifera
  • Usnea cirrosa
  • Usnea condensata
  • Usnea confusa
  • Usnea cornuta
  • Usnea deformis
  • Usnea dimorpha
  • Usnea diplotypus
  • Usnea duriuscula
  • Usnea endochrysea
  • Usnea erinacea
  • Usnea evansii
  • Usnea fibrillosa
  • Usnea filipendula
  • Usnea finkii
  • Usnea florida
  • Usnea fragilescens
  • Usnea freyi
  • Usnea fulvoreagens
  • Usnea furfurosula
  • Usnea glabrata
  • Usnea glabrescens
  • Usnea graciosa
  • Usnea hesperina
  • Usnea hirta
  • Usnea intermedia
  • Usnea kajalae
  • Usnea lapponica
  • Usnea leucosticta
  • Usnea longissima
  • Usnea merrillii
  • Usnea michauxii
  • Usnea mirabilis
  • Usnea monstruosa
  • Usnea montana
  • Usnea mutabilis
  • Usnea occidentalis
  • Usnea pachyclada
  • Usnea pensylvanica
  • Usnea perplexans
  • Usnea prostrata
  • Usnea ramillosa
  • Usnea retifera
  • Usnea roseola
  • Usnea rubicunda
  • Usnea sacbiosa
  • Usnea scabrata
  • Usnea scholanderi
  • Usnea sphacelata
  • Usnea spinulifera
  • Usnea strigosa
  • Usnea stuppea
  • Usnea subclavata
  • Usnea subfloridana
  • Usnea subfusca
  • Usnea subhirta
  • Usnea sublaxa
  • Usnea subscabrosa
  • Usnea substerilis
  • Usnea sylvatica
  • Usnea trichodea
  • Usnea tristis
  • Usnea vainioi
  • Usnea variegata
  • Usnea variolosa
  • Usnea wirthii
  • Usnea xanthopoga

Precautions

  • It should not be used for more than three weeks.
  • Avoid during Pregnancy and breast feeding.
  • It may cause Gastrointestinal Disorders.
  • It is recommended that you use it cautiously while applying the herb to the skin directly.
  • Direct application of the herb on the skin may result in allergic contact dermatitis.
  • Usnea contains some chemicals that might harm the liver. If you have liver disease, don’t take usnea by mouth.

 


References

Doctor visit helper

Prepare before seeing a doctor

A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Avoid heavy lifting, sudden bending, and prolonged bed rest.
  • Use comfortable posture and gentle movement as tolerated.
  • Discuss physiotherapy, X-ray, or MRI only when clinically needed.

OTC medicine safety

  • For mild back pain, pain-relief medicine may be discussed with a doctor or pharmacist.
  • Avoid repeated painkiller use if you have kidney disease, stomach ulcer, uncontrolled blood pressure, or are taking blood thinners.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Back pain with leg weakness, numbness around private area, loss of urine/stool control, fever, cancer history, or major injury needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Usnea, Beard lichen, tree’s dandruff, woman’s long hair, or tree moss, Beard Moss

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

RX Patient Help

Ask a health question safely

Write your symptom story. A health professional or site editor can review it before any answer is prepared. This box is not for emergency care.

Emergency first: Severe chest pain, breathing trouble, unconsciousness, stroke signs, severe injury, heavy bleeding, or rapidly worsening symptoms need urgent local medical care now.

Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.

References

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