This glossary explains biological, botanical, zoological and mycological terms, as well as terms used in cecidology. It is intended to make the numerous technical terms used in the photo gallery and on the information pages of this website easier to understand.
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Velum
A membranous or cobweb-like protective covering on young fruiting bodies that ruptures as the fruiting body expands and remains as a ring on the stipe or as a fringe at the cap margin. The cobweb-like, filamentous velum of Cortinarius and related fungi is called a cortina. A distinction is made between the universal veil (velum universale), which covers the entire young fruiting body, and the partial veil (velum partiale), which protects the young gills.
Volva
A membranous to sheath-like covering at the base of some basidiocarps. The volva develops from the universal veil of the young fruiting body, with all or part of that veil contributing to its formation.
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