VOLVA
- the membranous envelope that encloses the base of various mushrooms formed when the velum ruptures
- a membranous sac or cup about the base of the stipe in many gilled fungi (as agarics)
- a membranous sac that encloses certain immature mushrooms [n VOLVAS] : VOLVATE [adj]
- a sac that encloses certain immature mushrooms [n VOLVAS or VOLVAE]