Summary ²

Usnea is the generic and scientific name for several species of lichen in the family Parmeliaceae, that generally grow hanging from tree branches, resembling grey or greenish hair. It is sometimes referred to commonly as Old Man's Beard, Beard Lichen, Tree's Dandruff, Woman's Long Hair, or Tree Moss. It should not be confused with Oak Moss (genus Evernia), which it physically resembles and is also called Tree Moss.Usnea grows all over the world. Like other lichens...

Sources and Credits

1. (c) Arthur Chapman, some rights reserved (CC BY-NC-SA), http://www.flickr.com/photos/32005048@N06/3259193345
2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Usnea

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Global Biodiversity Information Facility (GBIF)
• Mushroom Observer
• SEINet Symbiota portals
• Ways of Enlichenment

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