Tremella -Berk (Latin scientific name: Tremella -Berk, alias: Tremella) is a fungus of Tremella of Tremellaceae, which has the reputation of "the highest among fungi". It is distributed in most provinces of China.
Tremella fuciformis consists of 10 thin and wrinkled flat petals. The fruiting body of Tremella fuciformis is pure white to milky white, generally in the shape of chrysanthemum or cockscomb. Shrinkage after drying, horny, hard and brittle, white or beige; The seed layer is on the surface of the petal, and the basidium is nearly spherical or nearly ovoid. Tremella fuciformis mycelium can colonize and grow vigorously under suitable humidity conditions.