Hericium erinaceus (also called Lion's Mane Mushroom, Bearded Tooth Mushroom, Hedgehog Mushroom, Satyr's Beard, Bearded Hedgehog Mushroom, pom pom mushroom, or Bearded Tooth Fungus) is an edible mushroom and medicinal mushroom in the tooth fungus group. It can be identified by its tendency to grow all the spines out from one group (rather than branches), long spines (greater than 1 cm length) and its appearance on hardwoods. Hericium erinaceus can be mistaken for three other species of Hericium which also grow in North America, all of which are popular edibles. In the wild, these mushrooms are common during late summer and fall on hardwoods, particularly American Beech.

Hericium erinaceus or Lions Mane grows primarily on hardwoods, though conifers can also be used with some success. Either logs or stumps can be inoculated. Mycelium is whitish in color. The spawn plugs should be inserted into the open face of cut wood. This eminently edible mushroom species is ideal for inoculation into stumps or partially buried logs. Hericium erinaceus is widely distributed on hardwoods, particularly oaks, and can be found naturally across much of North America. These are beautiful mushrooms, with cascading white icicle-like spines, and are some of the best of the edible fungi.

Also known as Yamabushitake, it has long been used for its anti-tumor and immune-stimulating properties. It has recently been the focus of studies as a stimulant for the production of Nerve Growth Factor (NGF).