The Family Cortinariaceae is a diverse and fascinating group of mushrooms that are found all over the world. Synonyms for this family include "Cortinariaceae", "Cortinaraceae", "Cortinariidae", and "Cortinarius family". These mushrooms are identified by their thin, web-like veil that covers the gills when they first emerge. As the mushroom matures, the veil breaks, leaving behind a ring or skirt-like structure on the stem. Most Cortinariaceae species are commonly found in forests, and some are important decomposers of dead plant material. While many species are edible, some can be toxic and should not be consumed. Overall, the Family Cortinariaceae is a fascinating and important part of our natural environment.