Answer: oakmoss

AnswerCrossword Clue
OAKMOSSLichen used in scents
OAKMOSSLichen used in perfumery
OAKMOSSLichen used to make perfume
OAKMOSSLichen growing on trees.
oakmosslichen, Evernia pranastri, growing on oak and other trees, yielding a resin used in the manufacture of perfumes
oakmossa lichen that grows on oak trees