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Scientific classification
Kingdom: Fungi
Subkingdom: Dikarya
Phylum: Basidiomycota
Subphylum: Agaricomycotina
Class: Agaricomycetes
Subclass: Agaricomycetidae
Order: Agaricales
Genus: Gerronema

Gerronema is a genus of small to medium sized lignicolous agarics with white, nonamyloid, basidiospores and decurrent lamellae[1][2][3]. Typically the pileus has a shallow to deep central depression giving the umbrella-like to funnel-shaped pileus the appearance of a belly button, or a belly with a navel. Similarly shaped agarics are said to be omphalinoid in appearance in reference to a morphologically similar genus, Omphalina. Gerronema differ from Omphalina by the absence of incrusting or intraparietal pigments typical of Omphalina, the occasional occurrence of bright colors, such as yellow or green absent in Omphalina, by the restriction to decay of wood, and by the tough tissues composed of sarcodimitic hyphae. The species are primarily tropical, but also occur in Europe and eastern North America where they fruit during hot muggy, summer weather. One of the most common species in the eastern U.S.A. is Gerronema strombodes [1][2][3].


  1. ^ Redhead, S.A. et al. (2002a). "Phylogeny of agarics: partial systematics solutions for bryophilous omphalinoid agarics outside of the Agaricales (euagarics)". Mycotaxon 82: 151-168.
  2. ^ Redhead, S.A. et al. (2002b). "Phylogeny of agarics: partial systematics solutions for core omphalinoid genera in the Agaricales (euagarics)". Mycotaxon 83: 19-57.
  3. ^ Norvell, L.L. et al. (1994). "Omphalina sensu lato in North America. 1-2: 1: Omphalina wynniae and the genus Chrysomphalina. 2: Omphalina sensu Bigelow". Mycotaxon 50: 379-407.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Gerronema". A list of authors is available in Wikipedia.
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