Ceratobasidium noxium
| Ceratobasidium noxium | |
|---|---|
| Scientific classification | |
| Kingdom: | Fungi |
| Phylum: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Cantharellales |
| Family: | Ceratobasidiaceae |
| Genus: | Ceratobasidium |
| Species: | C. noxium |
| Binomial name | |
|
Ceratobasidium noxium (Donk) P. Roberts |
|
| Synonyms | |
|
Koleroga noxia Donk |
|
Koleroga noxia Donk
Pellicularia koleroga Cooke sensu auct.
Corticium koleroga (Cooke) Höhn.
Botryobasidium koleroga (Cooke) Venkatar
Ceratobasidium noxium is a species of fungus in the order Cantharellales. Basidiocarps (fruit bodies) are thin, effused and web-like. The species is tropical to sub-tropical and is mainly known as a plant pathogen, the causative agent of "kole-roga" or black rot of coffee and various blights of citrus and other trees.
The fungus responsible for kole-roga of coffee was sent from India to Mordecai Cubitt Cooke at the Royal Botanic Gardens, Kew who named it Pellicularia koleroga in 1876. Cooke, however, described only hyphae and some small warted spores, later presumed to be from a contaminating mould. As a result Donk, when reviewing Pellicularia in 1954, dismissed both the genus and P. koleroga as "nomina confusa", later (1958) substituting the new name Koleroga noxia for the species. Based on a re-examination of specimens, Roberts (1999) considered Koleroga to be a synonym of Ceratobasidium, hence the current name Ceratobasidium noxium. "Koleroga" means "rot disease" in the Kannada language of Karnataka.
Fruit bodies are effused, thin, and whitish. Microscopically they have colourless hyphae, 3 to 8 μm wide, without clamp connections. The basidia are ellipsoid to broadly club-shaped, 10 to 12 by 7 to 8 μm, bearing 4 sterigmata. The basidiospores are narrow and fusiform, 9 to 13 x 3 to 5 μm.
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