Usnea

Từ điển WordNet v3.1 - WordNet Dictionary

noun

widely distributed lichens usually having a greyish or yellow pendulous freely branched thallus
• Syn:
genus Usnea
• Hypernyms:
fungus genus
• Member Holonyms:
Usneaceae, family Usneaceae
• Member Meronyms:
beard lichen, beard moss, Usnea barbata