1 oz. Reishi Mushroom powder (Ganoderma lucidum) Also known as Ganoderma lucidum, Lucky Fungus, Ling-Zi Introduction Reishi is that age old medicine cited thousands of years ago in several texts and scripts as being a tonic for emperors. At one time this mushroom was specifically used under the prestigious vestiges of the ruling class, but it has since made its way into the pantries of us common folk. Traditional and contemporary Chinese medicine admire it as a tonic benefiting vital energy or "Qi", and it is popularly prescribed for a multitude of maladies. Reishi is a polypore mushroom, growing in damp, dark forests and the occasional rotting log. Modern day demand has forced its cultivation in Japan, China and the United States which is promising for the wild stands of Reishi.