Action ► Astringent, resolvent, diuretic. Used externally for pain in renal and lumbar regions. Also used as an ingredient in cosmetic preparations.
Several lichen species contain abundant quantities of usnic acid which exhibits antimicrobial and antifungal activity and is immunologically active in contact dermatitis.
The Ayurvedic Pharmacopoeia of India recommends the thallus in dysuria.
Dosage ► Whole thallus—1-3 g powder. (API, Vol. III.)
Family ► Compositae; Asteraceae.
Habitat ► Tropical and subtropical countries of the world.
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