Exidia
Genus of fungi
title: "Exidia" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["auriculariales", "agaricomycetes-genera"] description: "Genus of fungi" topic_path: "general/auriculariales" source: "https://en.wikipedia.org/wiki/Exidia" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Genus of fungi ::
| image = Exidia glandulosa 74739.jpg | image_caption = Exidia glandulosa | taxon = Exidia | authority = Fr. | type_species = Exidia glandulosa | type_species_authority = (Bull.) Fr. | subdivision_ranks = Species | subdivision =
Exidia is a genus of fungi in the family Auriculariaceae. The species are saprotrophic, occurring in attached or recently fallen dead wood, and produce gelatinous basidiocarps (fruit bodies). The fruit bodies are diverse, pustular, lobed, button-shaped or cup-shaped. Several species, including the type species Exidia glandulosa, have sterile pegs or pimples on their spore-bearing surface. The genus has a cosmopolitan distribution and around 20 species are currently recognized worldwide. Initial molecular research indicates the genus is artificial.
Taxonomy
Exidia species were originally placed in the genus Tremella along with many other gelatinous fungi. The genus Exidia was separated from Tremella by Fries in 1822, based mainly on fruit body shape. Fries initially included species now assigned to Auricularia within the genus.
Recent molecular research has indicated that Exidia as currently circumscribed is an artificial grouping, the species not being clearly differentiated from similar, but effused species assigned to the genera Exidiopsis and Heterochaete. Only a few species have yet been sequenced, however.
Description
Exidia fruit bodies are gelatinous, most having a distinct spore-bearing upper surface and a sterile undersurface. These surfaces are either smooth or (in some species) covered in dense or scattered sterile pegs or pimples. Fruit bodies grow either separately or in clusters, in which case they may coalesce.
Microscopic characters
Exidia fruit bodies are composed of hyphae with clamp connections in a gelatinous matrix. The spore-bearing surface is initially covered in a layer of branched hyphidia below which the basidia are formed. The basidia are tremelloid (ellipsoid and vertically septate), giving rise to long, sinuous sterigmata or epibasidia on which the basidiospores are produced. These spores are allantoid (sausage-shaped) or less commonly oblong to cylindrical.
Species
The list below includes species of Exidia that have recently been described or redescribed. Some additional older species may also be valid, but lack a modern description. The type locality (but not the wider distribution) is given for each species.
::data[format=table]
| Image | Name | Type Locality |
|---|---|---|
| Exidia aeruginosa | Jamaica | |
| Exidia alveolata | Ecuador | |
| Exidia ambipapillata | Guatemala | |
| Exidia antiguae | Guatemala | |
| Exidia badioumbrina | Poland | |
| Exidia brunneola | Finland | |
| Exidia candida | USA | |
| [[File:2007-03-04 Exidia cartilaginea 2.jpg | 150px]] | Exidia cartilaginea |
| Exidia compacta | USA | |
| [[File:Exidia crenata 106348162.jpg | 150px]] | Exidia crenata |
| Exidia cystidiata | USA | |
| [[File:Exidia glandulosa 111870458.jpg | 150px]] | Exidia glandulosa |
| Exidia lutea | Guatemala | |
| Exidia maracensis | Brazil | |
| Exidia maya | Guatemala | |
| Exidia mexicana | Mexico | |
| [[File:Exidia nigricans 105732108.jpg | 150px]] | Exidia nigricans |
| Exidia nothofagi | New Zealand | |
| Exidia panamensis | Panama | |
| Exidia pergamena | Brazil | |
| [[File:Exidia pithya (25225906277).jpg | 150px]] | Exidia pithya |
| Exidia purpureocinerea | South Africa | |
| Exidia pusilla | Brunei | |
| Exidia qinghaiensis | China | |
| [[File:Exidia recisa 34873 cropped.jpg | 150px]] | Exidia recisa |
| Exidia reflexa | China | |
| [[File:Exidia repanda 91416239.jpg | 150px]] | Exidia repanda |
| [[File:Kandisbraune Drüsling (Exidia saccharina) - hms(1).jpg | 150px]] | Exidia saccharina |
| Exidia subglandulosa | China | |
| Exidia subsaccharina | France | |
| [[File:2009-01-10 Exidia thuretiana 1 cropped.jpg | 150px]] | Exidia thuretiana |
| Exidia tucumanensis | Argentina | |
| Exidia umbrinella | Italy | |
| [[File:2017-03-22 Exidia uvapassa Lloyd 725109.jpg | 150px]] | Exidia uvapassa |
| Exidia yadongensis | China | |
| Exidia zelleri | USA | |
| :: |
References
References
- (2008). "Dictionary of the Fungi.". CABI.
- (2001). "Phylogenetic relationships in ''Auriculariales'' and related groups – hypotheses derived from nuclear ribosomal DNA sequences". Mycological Research.
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