'Usnea barbata' definitions:
Definition of 'Usnea barbata'
(from WordNet)
noun
Greenish grey pendulous lichen growing on trees [syn: beard lichen, beard moss, Usnea barbata]
Definition of 'Usnea barbata'
From: GCIDE
- Treebeard \Tree"beard`\, n. (Bot.) A pendulous branching lichen (Usnea barbata); -- so called from its resemblance to hair. [1913 Webster]