![](http://www.alamy.com/thumbs/6/94B1BE2D-90B7-43AF-A529-9A8D92B7620B/D4J05K.jpg)
Witches' Whiskers Lichen Usnea florida – the apothecium show branched eyelash cilia
Usnea florida is very sensitive to air pollution, especially sulphur dioxide. It has been used in both traditional and modern herbal medicine - the usnic acid it contains is a potent antibiotic and antifungal agent.
Size: 5100px × 3399px
Location: Lake Vyrnwy, Powys, Wales, UK
Photo credit: © Sabena Jane Blackbird / Alamy / Afripics
License: Licensed
Model Released: No
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