Volvariella

Volvariella is a genus of mushrooms with deep salmon pink gills and spore prints. They lack a ring, and have an Amanita-like volva at the stem base. Some species of Amanita look similar, but Amanita has white spores and often have a ring. Since the gills of young Volvariella are white at first, they are more easily mistaken for Amanita. The genus is estimated to contain about 50 species.