Genus Hydnum is a group of fungi that are commonly known as hedgehog mushrooms, due to their prickly appearance. These fungi belong to the family of Bankeraceae, and are found in temperate forests around the world. Some synonyms for the Genus Hydnum include the tooth fungi, the sweet tooth fungi, and the wood hedgehog fungi. These names refer to the unique spines or teeth that cover the underside of the mushroom cap. The spines differ from the typical gills of other fungi and make it easier to identify this mushroom. Hedgehog mushrooms have been used in traditional medicine for centuries, and recent studies have shown potential benefits for immunity and heart health.