The pileus is the technical name for the cap, or cap-like part, of a

basidiocarp In fungi, a basidiocarp, basidiome, or basidioma () is the sporocarp of a basidiomycete, the multicellular structure on which the spore-producing hymenium is borne. Basidiocarps are characteristic of the hymenomycetes; rusts and smuts do n ...

or ascocarp ( fungal fruiting body) that supports a spore-bearing surface, the hymenium.Moore-Landecker, E: "Fundamentals of the Fungi", page 560. Prentice Hall, 1972. The hymenium ( hymenophore) may consist of lamellae, tubes, or teeth, on the underside of the pileus. A pileus is characteristic of agarics, boletes, some polypores, tooth fungi, and some ascomycetes.

Classification

Pilei can be formed in various shapes, and the shapes can change over the course of the developmental cycle of a fungus. The most familiar pileus shape is hemispherical or ''convex.'' Convex pilei often continue to expand as they mature until they become flat. Many well-known species have a convex pileus, including the button mushroom, various '' Amanita'' species and boletes. Some, such as the parasol mushroom, have distinct bosses or umbos and are described as '' umbonate''. An umbo is a knobby protrusion at the center of the cap. Some fungi, such as chanterelles have a funnel- or

trumpet The trumpet is a brass instrument commonly used in classical and jazz ensembles. The trumpet group ranges from the piccolo trumpet—with the highest register in the brass family—to the bass trumpet, pitched one octave below the standar ...

-shaped appearance. In these cases the pileus is termed ''infundibuliform''.

Image:Campanulate cap icon.svg, Campanulate (bell-shaped) Image:Conical cap icon.svg, Conical Image:Convex cap icon.svg, Convex Image:Depressed cap icon.svg, Depressed Image:Flat cap icon.svg, Flat Image:Infundibuliform cap icon.svg, Infundibuliform Image:Offset cap icon.png, Offset Image:Ovate cap icon.svg, Ovate Image:Umbillicate cap icon.svg, Umbilicate Image:Umbonate cap icon.svg, Umbonate

Notes

References

*Arora, D: "Mushrooms Demystified", Ten Speed Press, 1986. {{DEFAULTSORT:Pileus (Mycology) Fungal morphology and anatomy Mycology ja:キノコの部位#傘

Classification

See also

Notes

References