''Dentocorticium'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of six species of poroid fungi in the family

Polyporaceae The Polyporaceae are a family of poroid fungi belonging to the Basidiomycota. The flesh of their fruit bodies varies from soft (as in the case of the dryad's saddle illustrated) to very tough. Most members of this family have their hymeniu ...

. The genus was revised in 2018, with several new species added and some older species transferred to other genera, based on

phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...

analyses.

Taxonomy

Erast Parmasto Erast Parmasto (28 October 1928 – 24 April 2012) was a noted Estonian mycologist, bioscientist and botanist and onetime director of the Estonian Institute of Zoology and Botany. Parmasto was born in Nõmme. He became a member of the Estonian I ...

first described ''Dentocorticium'' in 1968 as a section of ''Laeticorticium'', a defunct genus that was classified in the

Corticiaceae The Corticiaceae are a family of fungi in the order Corticiales. The family formerly included almost all the corticioid (patch- or crust-forming) fungi, whether they were related or not, and as such was highly artificial. In its current sense, ...

. ''Dentocorticium'' was raised to generic status by M.J. Larsen and

Robert Lee Gilbertson Robert Lee Gilbertson (January 15, 1925 – October 26, 2011) was a distinguished American mycologist and educator. He was a faculty member at University of Arizona for 26 years until his retirement from teaching in 1995; he was a Professor Emer ...

in 1974. ''Dendrodontia'' and ''Fuscocerrena'' were shown to be

synonyms A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

of ''Dentocorticium'' in a 2018

analyses. ''Dendrodontia'' was circumscribed by Kurt Hjortstam and Leif Ryvarden in 1980 to contain ''Dendrodontia bicolor'' (formerly ''Grandinia bicolor''). ''Fuscocerrena'' was created by Ryvarden in 1982 to house ''Fuscocerrena portoricensis''.

Description

The

fruit bodies The sporocarp (also known as fruiting body, fruit body or fruitbody) of fungi is a multicellular structure on which spore-producing structures, such as basidia or asci, are borne. The fruitbody is part of the sexual phase of a fungal life cyc ...

of ''Dentocorticium'' fungi are annual. They range from effused (crust-like), to effused-reflexed (crust-like with edges curling to form rudimentary caps) or cap-like, with a texture ranging from membranous, to leathery or soft corky. The spore-bearing surface are often tooth-like, bumpy with

tubercle In anatomy, a tubercle (literally 'small tuber', Latin for 'lump') is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal. In plants A tubercle is generally a wart-like projection ...

s, or spiny. In some species the surface is poroid, daedaleoid (maze-like), and sometimes develops irregular ridges or hyphal pegs (bundles of hyphae that project from the

hymenium The hymenium is the tissue layer on the hymenophore of a fungal fruiting body where the cells develop into basidia or asci, which produce spores. In some species all of the cells of the hymenium develop into basidia or asci, while in others some ...

). ''Dentocorticium'' has a dimitic or trimitic

hypha A hypha (; ) is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium. Structure A hypha consists of one or ...

l system. The generative hyphae have clamp connections. There are brown skeletal hyphae present in the subiculum (a layer of loosely intertwined hyphae forming a mat covering the substrate and underlying the fruit body), spine trama, and hyphal pegs. Microbinding hyphae may be present in the subiculum or the substrate. Dendrohyphidia are present. Cylindrical to somewhat spindle shaped cystidia may be present. Basidia are club shaped and have four sterigmata. Spores are

ellipsoid An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation. An ellipsoid is a quadric surface; that is, a surface that may be defined as the ...

to cylindrical in shape,

translucent In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without appreciable scattering of light. On a macroscopic scale (one in which the dimensions a ...

with thin walls, and smooth. They do not react with Melzer's reagent, and acyanophilous (having cell walls that do not readily absorb cotton blue stain).

Species

*'' Dentocorticium bicolor'' (P.H.B.Talbot) Nakasone & S.H.He (2018) – southern Africa; Australia; East Asia; North America; South America *'' Dentocorticium hyphopaxillosum'' (M.J.Li & H.S.Yuan) Nakasone & S.H.He (2018) – China *'' Dentocorticium portoricense'' (Spreng. ex Fr.) Nakasone & S.H.He (2018) – North America; South America *'' Dentocorticium sulphurellum'' (Peck) M.J.Larsen & Gilb. (1974) – North America *'' Dentocorticium taiwanianum'' (H.C.Wang & Sheng H.Wu) Nakasone & S.H.He (2018) – China; Taiwan *'' Dentocorticium ussuricum'' (Parmasto) M.J.Larsen & Gilb. (1974) – east Asia Several species once placed in this genus were transferred elsewhere: *''Dentocorticium blastanos'' Boidin & Gilles (1998) = '' Neocampanella blastanos'' (Boidin & Gilles) Nakasone, Hibbett & Goranova (2009) *''Dentocorticium expallens'' (Bres.) Domański (1988) = '' Crustomyces expallens'' (Bres.) Hjortstam (1987) *''Dentocorticium pilatii'' (Parmasto) Duhem & H.Michel (2009) = '' Phlebiopsis pilatii'' (Parmasto) Spirin & Miettinen (2016) *''Dentocorticium sasae'' Boidin, Cand. & Gilles) Boidin, Lanq. & Duhem (1996) = '' Leptocorticium sasae'' (Boidin, Cand. & Gilles) Nakasone (2005) *''Dentocorticium utribasidiatum'' Boidin & Gilles (1998) = '' Leptocorticium utribasidiatum'' (Boidin & Gilles) Nakasone (2005)

References

{{Taxonbar, from=Q5259574 Polyporaceae Polyporales genera Taxa described in 1968