As the plant develops the veil is ruptured; the lower portion forms a sheath or volva round the base of the stem, while the upper portion persists as white patches or scales or warts on the surface of the cap. The stem usually bears an upper ring of tissue, the B C Amanita muscaria.
V, remains of volva or velum p, the pileus.
The presence of the volva, and the clear white gills and spores, distinguish this genus from all other agarics.
C, Longitudinal section of mature v, Remains of volva or velum p, The pileus.