Helotiales is an

order Order, ORDER or Orders may refer to: * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of d ...

of the class

Leotiomycetes The Leotiomycetes are a class of ascomycete fungi. Many of them cause serious plant diseases. Systematics The class Leotiomycetes contains numerous species with an anamorph placed within the '' fungi imperfecti'' (deuteromycota), that have onl ...

within the division

Ascomycota Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota, forms the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes. It is the largest phylum of Fungi, with over 64,000 species. The de ...

. The taxonomy within Helotiales has been debated. It has expanded significantly as genomic techniques for taxonomical identification have become more commonly used. , the order is estimated to contain 30 accepted families, 519 genera, and 6266 species. Helotiales is the largest order of non-stromatic

discomycetes Discomycetes is a former taxonomic class of Ascomycete fungi which contains all of the cup, sponge and brain fungi and some club-like fungi. It includes typical cup fungi like the scarlet elf cup and the orange peel fungus, and fungi with frui ...

that usually, but not always, have brightly coloured apothecia. Many members of the family have obviously cup-shaped

ascomata An ascocarp, or ascoma (), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci, each of which typically contains four to eight ascospores. Ascocarps are mo ...

with little or no stipes. They are usually found fruiting on

coarse Coarse may refer to: *Bosnian Coarse-Haired Hound, developed by 19th century Bosnian hunters as a scent hound. *Coarse (behavior), vulgar behavior * Coarse bubble diffusers, produce 1/4 to 1/2 inch bubbles which rise rapidly from the floor of a wa ...

or large wood debris as well as on other organic matter. Part of these discomycetes are limited to a specific

host range In biology and medicine, a host is a larger organism that harbours a smaller organism; whether a parasitic, a mutualistic, or a commensalist ''guest'' (symbiont). The guest is typically provided with nourishment and shelter. Examples include ...

, this goes as far as to not just being limited to one particular plant, additionally some species need a particular part of that plant.

Description

*Helotiales is distinguished by its disc or cup-shaped

apothecia An ascocarp, or ascoma (), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci, each of which typically contains four to eight ascospores. Ascocarps are mo ...

. *Its

asci ASCI or Asci may refer to: * Advertising Standards Council of India * Asci, the plural of ascus, in fungal anatomy * Accelerated Strategic Computing Initiative * American Society for Clinical Investigation * Argus Sour Crude Index * Association of ...

are only slightly thickened in contrast to other

*Most Helotiales species live as saprobes on soil

humus In classical soil science, humus is the dark organic matter in soil that is formed by the decomposition of plant and animal matter. It is a kind of soil organic matter. It is rich in nutrients and retains moisture in the soil. Humus is the Lati ...

, dead logs, manure and other organic matter. *The order includes most fungi that engage in ericoid mycorrhiza, including ''Rhizoscyphus ericae'', ''Meliniomyces'' species and ''Cairneyella variabilis''. *The order contains some of the most severe plant

pathogen In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a ger ...

s such as '' Monilinia fructicola'' ( brown rot on

stone fruit In botany, a drupe (or stone fruit) is an indehiscent fruit in which an outer fleshy part ( exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pit'', ''stone'', or '' pyrena'') of hardened endocarp with a seed (''kernel ...

s), '' Sclerotinia sclerotiorum'' (

lettuce drop Lettuce (''Lactuca sativa'') is an annual plant of the family Asteraceae. It is most often grown as a leaf vegetable, but sometimes for its stem and seeds. Lettuce is most often used for salads, although it is also seen in other kinds of food, ...

and other diseases), ''D. rosae'' (black spot of roses), '' Sclerotium cepivorum'' ( soft rot of onions) and ''

Botrytis cinerea ''Botrytis cinerea'' is a necrotrophic fungus that affects many plant species, although its most notable hosts may be wine grapes. In viticulture, it is commonly known as "botrytis bunch rot"; in horticulture, it is usually called "grey mould" ...

''.

Families

*'' Amicodiscaceae'' *'' Arachnopezizaceae'' *'' Bryoglossaceae'' *'' Cenangiaceae'' *'' Chlorociboriaceae'' *'' Chlorospleniaceae'' *'' Chrysodiscaceae'' *'' Dermateaceae'' *'' Discinellaceae'' *'' Drepanopezizaceae'' *'' Gelatinodiscaceae'' *'' Godroniaceae'' *'' Hamatocanthoscyphaceae'' *''

Helotiaceae The Helotiaceae are a family of fungi in the order Helotiales. The distribution of species in the family are widespread, and typically found in tropical areas. There are 117 genera and 826 species in the family. A question mark after the ge ...

'' *'' Hemiphacidiaceae'' *'' Heterosphaeriaceae'' *''

Hyaloscyphaceae The Hyaloscyphaceae are a family of fungi in the Helotiales order. Species in this family have a cosmopolitan distribution, and are saprobic, growing on dead wood and other plant matter. Genera According to the 2007 Outline of Ascomycota, the ...

'' *'' Hydrocinaceae'' *'' Lachnaceae'' *''

Loramycetaceae The Loramycetaceae are a family of fungi in the Ascomycota, class Leotiomycetes. This is a monotypic taxon, containing the single genus ''Loramyces''; the genus contains two aquatic species, ''L. juncicola'', named by American mycologist Wil ...

'' *'' Mitrulaceae'' *'' Mollisiaceae'' *'' Neolauriomycetaceae'' *'' Pleuroascaceae'' *'' Ploettnerulaceae'' *''

Rutstroemiaceae Rutstroemiaceae is a family of fungi in the order Helotiales. Species in this family have a cosmopolitan distribution, especially in temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66. ...

'' *'' Sclerotiniaceae'' *'' Solenopeziaceae'' *'' Tympanidaceae'' *''

Vibrisseaceae The Vibrisseaceae are a family of fungi in the order Helotiales. The family was circumscribed by mycologist Richard Korf in 1990 to include the genera '' Vibrissea'', '' Chlorovibrissea'', and ''Leucovibrissea''. According to the ''Dictionary of ...

Disputed or previously included families

Amorphothecaceae The Amorphothecaceae are a family (biology), family of fungus, fungi in the division Ascomycota. This family can not yet be taxonomically biological classification, classified in any of the ascomycetous class (biology), classes and order (biology ...

- Kirk (2008) assigned to Helotiales, but reclassified under order Erysiphales. * Ascocorticiaceae - reclassified under order

Medeolariales The Medeolariales are an order of the class Leotiomycetes within the phylum Ascomycota. The order is monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic speci ...

Phacidiaceae The Phacidiaceae are a family of fungi in the order Helotiales. According to a 2008 estimate, the family contained seven genera and 148 species. Genera As accepted by GBIF; * '' Allantophomopsiella'' (1) * '' Allantophomopsis'' (5) * '' ...

(also known as Bulgariaceae) - reclassified under order Phacidiales * Vandijckellaceae - identified by Crous et al. (2017), not widely accepted. File:Chlorociboria-aeruginascens.jpg, Green Elfcup or Green Wood Cup ''

Chlorociboria aeruginascens ''Chlorociboria aeruginascens'' is a saprobic species of mushroom, commonly known as the green elfcup or the green wood cup because of its characteristic small, green, saucer-shaped fruit bodies. Although the actual fruit bodies are infrequently ...

'',

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

: Chlorociboriaceae
(photo: Holger Krisp) File:Leeuwenhorstbos - Ascocoryne.jpg,

Ascocoryne ''Ascocoryne'' is a genus of fungi in the family Helotiaceae. It was circumscribed in 1967 by James Walton Groves and Doreen Wilson as a genus segregate from '' Coryne''. , Index Fungorum ''Index Fungorum'' is an international project to inde ...

, family:

File:Mollisia benesuada (Tul.) W. Phillips 718024.jpg, '' Mollisia benesuada'', family: Dermateaceae File:Bisporella citrina 59079.jpg, ''

Bisporella citrina ''Bisporella citrina'', commonly known as yellow fairy cups or lemon discos, is a species of fungus in the family Helotiaceae. The fungus produces tiny yellow cups up to in diameter, often without stalks, that fruit in groups or dense clusters on ...

'', family:

File:Arachnopeziza aurata 57007696.jpg, ''Arachnopeziza aurata'', family:

File:Eichen-Stromabecher Rutstroemia firma.jpg, Brown oak disk cup ''Rutstroemia firma'', family:

(photo: Holger Krisp) File:Botrytis conidiophores 16X.png, The necrotrophic fungus ''Botrytis conidiophores'',

Magnification Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a calculated number also called "magnification". When this number is less than one, it refers to a reduction in si ...

X16 , family:

Sclerotinaceae The Sclerotiniaceae are a family of fungi in the order Helotiales. Many species in this family are plant pathogens. Genera * ''Asterocalyx'' * ''Botryotinia'' * ''Botrytis'' * '' Ciboria'' * ''Ciborinia'' * '' Coprotinia'' * ''Cudoniopsis'' * ...

File:Vibrissea truncorum (Alb. & Schwein.) Fr 335788.jpg, ''Vibrissea truncorum'', family:

image source: Mushroom Observer

References

{{Taxonbar, from=Q134490 Leotiomycetes Ascomycota orders

Description

Families

Disputed or previously included families

See also

References