So far, 2000-3000 species of aromatic plant resources have been discovered in the world, including lichens, mosses, ferns and higher plant [1], the abundant aromatic lichen resources have their unique value and have been used for a long history.
Lichens have been used as aromatic materials, which can trace to ancient Egypt, people in Sahara Desert collected Parmelia andina Müll. Arg. for tobacco flavors and fragrances at that time [2]. People in Europe use Oakmoss (Evernia prunastri (L.) Ach.) as a famous natural fragrance for its unique fragrant flavor ever since the 16th century. And lichens are used in many other Asian countries be ethnic groups [3,4].