''Gyroflexus'' is a monotypic genus with a yellowish-ivory colored omphalinoid

agaric An agaric () is a type of fungus fruiting body characterized by the presence of a pileus (cap) that is clearly differentiated from the stipe (stalk), with lamellae (gills) on the underside of the pileus. In the UK, agarics are called "mushrooms ...

in the

Hymenochaetales The Hymenochaetales are an order of fungi in the class Agaricomycetes. The order in its current sense is based on molecular research and not on any unifying morphological characteristics. According to one 2008 estimate, the Hymenochaetales con ...

that grows on living ''

Sphagnum ''Sphagnum'' is a genus of approximately 380 accepted species of mosses, commonly known as sphagnum moss, peat moss, also bog moss and quacker moss (although that term is also sometimes used for peat). Accumulations of ''Sphagnum'' can store wa ...

'' Phylogenetically related agarics are in the genera ''

Rickenella ''Rickenella'' is a genus of brightly colored bryophilous agarics in the Hymenochaetales that have an omphalinoid morphology. They inhabit mosses on mossy soils, peats, tree trunks and logs in temperate regions of both the Northern and Southern ...

'', ''

Blasiphalia ''Blasiphalia'' is a fungal genus in the family Repetobasidiaceae. A monotypic genus, it contains the honey colored omphalinoid agaricbr> ''Blasiphalia pseudogrisella'', which grows with the Marchantiophyta, liverwort genus ''Blasia''. Phylogene ...

'', ''

Loreleia ''Loreleia'' is a genus of brightly colored agarics in the Hymenochaetales that have an omphalinoid morphology. They inhabit mosses and or liverworts on soil in temperate regions of the Northern Hemisphere. Phylogenetically related agarics are i ...

'', ''

Cantharellopsis ''Cantharellopsis'' is a tan- to whitish-colored bryophilous monotypic genus in the Hymenochaetales. The fruit bodies of the single species ''Cantharellopsis prescotii'' has a form intermediate between an ''Omphalina'' and a chanterelle (''Cantha ...

'' and ''

Contumyces ''Contumyces'' is a genus of brightly colored possibly bryophilous or graminicolous agarics in the Hymenochaetales. They have an omphalinoid morphology, and therefore were previously classified in ''Omphalina''http://perso.orange.fr/famm/Photos/B ...

'', as well as the stipitate-stereoid genera '' Muscinupta'' and ''

Cotylidia ''Cotylidia'' is a fungal genus characterized by small to moderately sized, white to palely yet brightly colored, stalked, fan-shaped to funnel-shaped fruit bodiehttps://web.archive.org/web/20070821184454/http://www.fungaljungal.org/family_pages ...

'' and clavaroid genus, ''

Alloclavaria ''Alloclavaria'' is a clavarioid genus in the Hymenochaetales recently segregated from ''Clavaria'' by molecular analysis. Phylogenetically related fungi are in the agaricoid genera '' Rickenella'', '' Contumyces'', '' Gyroflexus'', '' Loreleia'' ...

''. ''Gyroflexus brevibasidiatus'', the type, amongst the vaguely omphalinoid genera is distinguished by its small, mammiform pileus, growth on ''

'', and lack of

cystidia A cystidium (plural cystidia) is a relatively large cell found on the sporocarp of a basidiomycete (for example, on the surface of a mushroom gill), often between clusters of basidia. Since cystidia have highly varied and distinct shapes that ar ...

.
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Etymology

The etymology of the name ''Gyroflexus'' is not known. When coined in a prepublication advertisement, it clearly was intended to be applied to several species, although only one, the type was included. Possibly it refers to the slightly undulating stipe in contrast to the very straight stipes of related genera like ''

'' for which the same author coined that name years earlier. The name ''Sphagnomphalia'' is synonymous.

References

{{Taxonbar, from=Q5625479, from2=Q51841839 Repetobasidiaceae Monotypic Basidiomycota genera