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Omphalina

Omphalina
Nabeling001.JPG
not identified Omphalina
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Genus: Omphalina
Quél. (1886)
Type species
Omphalina pyxidata
(Bull.) Quél. (1886)
Synonyms
  • Helotium Tode (1790)
  • Phytoconis Bory (1797)
  • Agaricus trib. Omphalia Fr. (1821)
  • Botrydina Bréb. (1839)
  • Botrydiopsis Trevis. (1845)
  • Omphalia (Fr.) Staude (1857)
  • Coriscium Vain. (1890)
  • Phalomia Nieuwl. (1916)
  • Phaeotellus Kühner & Lamoure (1972)

Omphalina is a genus of small agarics with white, nonamyloid, basidiospores and decurrent gills. Typically the cap has a deep central depression giving the umbrella-like to funnel-shaped cap the appearance of a belly button, or a belly with a navel. Similarly-shaped agarics are said to be omphalinoid in appearance.

Omphalina is the diminutive of Omphalia which is a reference to the belly button or navel-like appearance of the small dome-shaped caps with a central depression. It derives from the Greek word omphalos.

The generic name Omphalina is an ancient one, linked to the even older mushroom name Omphalia which cannot be used because it is an illegitimate later homonym. Historically, the former was generally applied to any white-spored, similarly sized and shaped mushroom. As a result, many species that still are labeled Omphalina, or were labeled Omphalia are in fact not true Omphalinas. The now conserved type species is Omphalina pyxidata[1][2][3]. Prior to conservation of the type, typification was debated and unstable for several decades.


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