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Images of Old Man's Beard (Usnea)
Old Man's Beard (Usnea) Identification Guide
Identification Discussion by Members (scroll to post comment)
By Roman on
5/8/2010 3:52:44 PM
Usnea lichens can be easily identified by pulling back the outer sheath on the main stem. Usnea lichens have an elastic pure white chord running through the center of the main stem. Lichen species which resemble Usnea do not have this white cord, and appear grey-green throughout. Usnea lichens do not change color throughout the growing season as do lichen species which closely resemble Usnea.
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