Volva (mycology)
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In mycology, a volva is a cup-like structure at the base of a mushroom that is a remnant of the universal veil, or the remains of the peridium that encloses the immature fruit bodies of gasteroid fung
The volva is the prominent cup-shaped feature at the base of this Amanita caesarea.
Volvariella bombycina
Volvariella surrecta growing parasitically
Volvopluteus gloiocephalus
Universal veil
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In mycology, a universal veil is a temporary membranous tissue that fully envelops immature fruiting bodies of certain gilled mushrooms. The developing Caesar's mushroom, for example, which may resemb
Immature fruiting bodies of two different mushrooms encased in a universal veil - deadly poisonous Amanita phalloides (left) and edible Amanita caesarea (right)
The white patches on the caps of these Amanita muscaria mushrooms are remnants of universal veils.