MeSH Heading	Usnea
Tree Number	B02.500.915
Tree Number	B05.340.915
Scope Note	A genus of lichens containing usnic acid and mucilage. Usnea barbata has been used as an herbal medicine.
Entry Term	Usnea barbata
Allowable Qualifiers	CH CL CY DE EN GD GE IM IP ME PH PY RE TU UL VI
Previous Indexing	Lichens (1967-1999)
History Note	2000
Date of Entry	19991108
Unique ID	D020949

Algae [B02]
Lichens [B02.500]
	Usnea [B02.500.915]

Fungi [B05]
Lichens [B05.340]
	Usnea [B05.340.915]