Volva
noun, Mycology.
1.
the membranous envelope that encloses the base of various mushrooms formed when the velum ruptures.
noun (pl) -vae (-viː), -vas
1.
(botany) a cup-shaped structure that sheathes the base of the stalk of certain mushrooms
volva
(vŏl’və, vôl’-)
A cuplike structure around the base of the stalk of certain basidiomycete fungi.
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