Hericium erinaceus, also known as Lion’s Mane, is an edible mushroom that belongs to the tooth fungus group. Lion’s mane mushroom is native to Asia, North America, and Europe. Lion’s mane grows in clusters and has long spines that lend it nicknames like the pom pom mushroom, bearded tooth mushroom, satyr’s beard, bearded hedgehog mushroom, or bearded tooth fungus. In the wild, these mushrooms grow late in the summer and early fall on hardwood trees. The American Beech tree is known for being home to Lion’s mane mushroom clusters.
Hericium erinaceus has a long history of use in traditional Chinese practices. A rat study conducted in 2005 showed some compounds in the mushroom, like threitol, D-arabinitol, and palmitic acid, may have oxidation regulating benefits. More recently and more relevant to human use, is a 2013 review of scientific studies, which asserted the benefits of the mushroom by saying "This mushroom is rich in some physiologically important components, especially β-glucan polysaccharides, which may support healthy cellular function, promote immunity and health, and display neuro-protective benefits."