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Hypochnella - Wikipedia

From Wikipedia, the free encyclopedia

Hypochnella is a genus of corticioid (crust-like) fungi. It is one of several genera that were doubtfully placed in the order Atheliaceae based on microscopic morphological simultaneous with core Atheliaceae genera.^[1]^[2] However, a molecular study with emphasis on Atheliales, including samples across most agaricomycete orders, retrivied the species Hypochnella violacea within the order Polyporales.^[2] Although a close relationship between Hypochnella violacea and genus Australohydnum was suggested, resolving the phylogenetic position of Hypochnella within Polyporales was outside the scope of the study. The genus contains two described species.^[3]

Hypochnella

Hypochnella violacea
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Polyporales
Genus:	Hypochnella J.Schröt. (1888)
Type species
Hypochnella violacea Auersw. ex J.Schröt. (1888)
Species
H. violacea H. verrucospora
Synonyms
Hypochnus (Auersw. ex J.Schröt.) Sacc. (1888)

Description

Members of Hypochnella form thin, membrane-like annual basidiocarps on various decaying biological substrates, notably heavily decayed wood. They can range in colour from greyish to various shades of purple or violet depending on i.a. humidity, and are resupinate to effuse in shape. The hymenal surface is hypochnoid^{[clarification needed]} and without sterile elements. The basidiosprores are pale brown and ellipsoid to amygdaliform (almond-shaped), or subsylindrical in Hypochnella verrucospora. They are distinctively thick-walled and amyloid compared to other corticoid fungi. Other types of spores are not known, and no anamorphs have been observed.^[3]

The hyphal system is monomitic, consisting of simple septate, smooth to partly encrusted generative hyphae without clamps, which branch at right to acute angles. Thickness of the hyphal walls, length of the cells and colour varies between different parts of the mycelium.^[3]

Distribution

Both Hypochnella species are uncommon, and known from only a small number of sites. Their habitats and distribution differ substantially. H. violacea has been known for a significantly longer time than H. verrucospora and is found in several countries of temperate Europe as well as North America, while H. verrucospora is found only in Brazil and Argentina.^[3] Consequently, the former is assumed to have a temperate range while the latter is presumably restricted to the neotropics.^[3]

References

^ Eriksson, John, Ryvarden, Leif (1975). The Corticiaceae of North Europe Volume 3, Coronicium-Hyphoderma. pp. 287–546.{{cite book}}: CS1 maint: multiple names: authors list (link)
^ ^a ^b Sulistyo, Bobby P.; Larsson, Karl-Henrik; Haelewaters, Danny; Ryberg, Martin (2021-03-01). "Multigene phylogeny and taxonomic revision of Atheliales s.l.: Reinstatement of three families and one new family, Lobuliciaceae fam. nov". Fungal Biology. 125 (3): 239–255. Bibcode:2021FunB..125..239S. doi:10.1016/j.funbio.2020.11.007. hdl:1854/LU-8705206. ISSN 1878-6146. PMID 33622540. S2CID 229396548.
^ ^a ^b ^c ^d ^e Coelho, Gilberto; Douanla-Meli, Clovis; Langer, Ewald; Langer, Gitta (2010-09-01). "Hypochnella verrucospora (Basidiomycota, Atheliales), a neotropical new species with ornamented basidiospores". Mycologia. 102 (5): 1158–1162. doi:10.3852/09-251. ISSN 0027-5514. PMID 20943515. S2CID 22311269.

External links

Hypochnella in Index Fungorum

Taxon identifiers
Hypochnella	Wikidata: Q5959321 CoL: 52N9 EoL: 21110 GBIF: 2554131 iNaturalist: 509010 IndexFungorum: 17830 IRMNG: 1090013 MycoBank: 17830 NBN: NHMSYS0001484978 NCBI: 2589579 Open Tree of Life: 4106553 SpeciesFungorum: 17830

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