Where does Camphor flavor in Puerh tea come from?

„Fragrance
Broad leaf variety old tree tea aromas can generally be divided into the following;

fruit-flower fragrance, honey-flower fragrance , honey-sweet fragrance, date-jujube fragrance, orchid flower fragrance , camphor fragrance, sticky rice fragrance , lotus flower fragrance , mellow-aged fragrance

Some teas are highly fragrant, others have refined and prolonged fragrance. Although there are many different kinds of fragrance, they should all be natural, smooth and easy to get a feeling for. These fragrances appear when the tea is drunk and are not evident when smelling the tea.“