Distinguishing commercially grown Ganoderma lucidum from Ganoderma lingzhi from Europe and East Asia on the basis of morphology, molecular phylogeny, and triterpenic acid profiles

Although it is common practice to apply the originally European name ‘Ganoderma lucidum’ to all commerical reishi products. Taxonomists have made a case that there is a difference between East Asian strains G. lingzhi and the European G. lucidum strains. G. lucidum contains less triterpenic acids than G. lingzhi.
https://www.sciencedirect.com/science/article/pii/S0031942216300413