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