The genus Flammulina is a type of mushroom that belongs to the family Physalacriaceae. There are several synonyms for the genus Flammulina, including Collybia velutipes, Agrocybe velutipes and Flammulina velutipes. These synonyms are often used to describe the same mushroom species that is commonly known as enoki, velvet stem, golden needle, or winter mushroom. However, some species that were previously considered as part of the genus Flammulina have been reclassified under different genera. The genus Flammulina is known for its rich flavor, delicate texture, and health benefits, making it a popular ingredient in many cuisines worldwide.