A great article about Usnea from Deep Roots Herbal Medicne!
"Usnea’s energy is cool and dry, and its main actions are to clear heat,
move dampness, and resolve toxicity. Despite Usnea’s almost translucent
energy and subtle taste (though many people dislike the taste, I quite
like it), Usnea is one of the most powerful anti-fungal, antibacterial
and antiviral herbs (lichens) I use. From the lungs to the urinary tract
to the reproductive system, Usnea has an affinity for rebalancing
bacteria and eradicating infection in the mucus membranes, particularly
when accompanied with signs of heat."