An annulus is the ring like structure sometimes found on the stipe of a mushroom. In Mycology a stipe refers to the stem or stalk-like feature supporting the cap of a Mushroom. A mushroom is the fleshy Spore -bearing Fruiting body of a Fungus, typically produced above ground on soil or on its food source The annulus represents the remaining part of the partial veil, after it has ruptured to expose the gills or other spore-producing surface. Partial veil is a mycological term which describes a structure of some Mushrooms which protects the developing gills or other Spore-producing surface A gill, or lamella, is one of the papery ribs under the cap of a mushroom most often but not always an Agaric. An annulus may be thick and membranous, or it may be cobweb-like. The latter type of annulus is referred to as a cortina. An annulus may be persistent and be a noticeable feature of a mature mushroom, or it may disappear soon after the emergence of the mushroom, perhaps leaving a few remnants on the stipe as an "annular zone".
An annulus can be any of various shapes, which can be important in identification of the mushroom:
- pendant - drooping or skirtlike
- flaring - spreading outward from the stipe
- sheathing - opening upwards around the stipe
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In Mycology a stipe refers to the stem or stalk-like feature supporting the cap of a Mushroom.Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic