- Reishi Mushroom is also known by the name Lucky Fungus. Reishi Mushrooms grow wild on decaying logs and tree stumps in the coastal provinces of China. The fruit ing body of the mushroom is employed for health Reishi occurs in six different colors, but the red variety is most commonly used and commercially cultivated in North America, China, Taiwan, Japan, and Korea. The Latin word lucidum means "shiny" or "brilliant," and refers to the varnished surface of Reishi's cap, which is reddish orange t