Ceratorhiza
| Ceratobasidium | |
|---|---|
_D.P._Rogers_203475.jpg) |
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| Ceratobasidium cornigerum | |
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Cantharellales |
| Family: | Ceratobasidiaceae |
| Genus: |
Ceratobasidium D.P. Rogers |
| Type species | |
|
Ceratobasidium calosporum D.P. Rogers |
|
| Species | |
| Synonyms | |
|
Ceratorhiza R.T. Moore (anamorph) |
|
Ceratorhiza R.T. Moore (anamorph)
Ceratobasidium is a genus of fungi in the order Cantharellales. Basidiocarps (fruit bodies) are effused and the genus is sometimes grouped among the corticioid fungi, though species also retain features of the heterobasidiomycetes. Rhizoctonia-like anamorphs of Ceratobasidium species are placed in the genus Ceratorhiza. Species are saprotrophic, but several are also facultative plant pathogens, causing a number of commercially important crop diseases. Some are also endomycorrhizal associates of orchids.
Ceratobasidium was introduced in 1935 by American mycologist D.P. Rogers to accommodate species of the old form genus Corticium that showed affinities with the heterobasidiomycetes. These affinities were the possession of large sterigmata ("Cerato-basidium" means "horned basidium") and the production of basidiospores that produce secondary spores. Four species were originally placed in the genus, with subsequent authors adding a further 35 species.
Research on the septal pore ultrastructure of the little-known and atypical type species, Ceratobasidium calosporum, indicates that it is a member of the Auriculariales and is unrelated to other species of Ceratobasidium. This taxonomic problem has not yet been resolved. Molecular research, based on cladistic analysis of DNA sequences, places Ceratobasidium (excluding the type species) within the Cantharellales.
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