Definition of beard moss Beard moss

We found 2 definitions of beard moss from 2 different sources.

What does beard moss mean?

Noun
beard moss - greenish grey pendulous lichen growing on trees
		beard lichen, Usnea barbata
		lichen any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.

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beard moss (Noun)
Any of several lichens of the genus Usnea, that generally grow hanging from tree branches, resembling grey or greenish hair.

beard moss in sign language