Leif Ryvarden

Trichaptum abietinum is a species of poroid fungus in the order Hymenochaetales. It is saprophytic, growing from dead conifer wood. The white-gray cap is 1–4 cm wide and usually no more than 0.5 cm thick, shelved and fanlike, with brownish and leathery flesh. The spores are white, cylindrical, and smooth. The species is inedible. Similar species include Trichaptum biforme, Bjerkandera adusta, and Trametes versicolor.

Trichaptum biforme, commonly known as the violet-pored bracket fungus, purple tooth, or violet-toothed polypore, is a species of poroid fungus in the order Hymenochaetales.

Aurantiporus fissilis, or the greasy bracket, is a species of poroid fungus in the family Polyporaceae. It is a plant pathogen. Although known primarily as a central and northern European species, it was recorded in Taiwan in 2016. It is inedible.

Antrodiella is a genus of fungi in the family Steccherinaceae of the order Polyporales.

Trametes ochracea is a common polypore mushroom native to North America and Europe, although rarer than some other Trametes species. It is a related species to, and is a lookalike of the pale variety of Trametes versicolor. Like T. versicolor, it is commonly called turkey tail, and other common names are ochre bracket and ochre trametes. T. ochracea is a close relative of the more famous T. versicolor, so research into its medicinal value is limited yet occurring, and it is likely it is of similar medicinal value.

Coriolopsis gallica, the brownflesh bracket, is a fungus found growing on decaying wood. It is not associated with any plant disease, therefore it is not considered pathogenic. For various Coriolopsis gallica strains isolated, it has been found, as a common feature of the division Basidiomycota, that they are able to degrade wood components, mainly lignin and to lesser extent cellulose, which results in a degradation area covered by the accumulating white cellulose powder. Therefore, C. gallica might generically be called, as with many other basidiomycetes, a "white-rot" fungus. This feature

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Gloeoporus taxicola is a species of fungus belonging to the family Irpicaceae.

Junghuhnia nitida is a widespread species of crust fungus in the family Steccherinaceae.

Auriporia is a small genus of four species of poroid fungi in the family Fomitopsidaceae.

Wolfiporia is a genus of fungi in the family Polyporaceae. The genus was circumscribed by Leif Ryvarden and Robert Lee Gilbertson in 1984 to contain the type species Wolfiporia cocos (now known as Wolfiporia extensa) and W. dilatohypha. The genus is named in honor of mycologist Frederick Adolph Wolf, who was the first to officially describe the type species.

Radulodon is a genus of toothed crust fungi in the family Meruliaceae. The genus was circumscribed in 1972 by Norwegian mycologist Leif Ryvarden, with R. americanus as the type species.

Junghuhnia collabens is a species of fungus belonging to the family Steccherinaceae. It has cosmopolitan distribution.

Hypochniciellum is a genus of corticioid fungi in the family Amylocorticiaceae. Species in the genus have white to cream, resupinate fruit bodies (growing flat, like a crust). The hyphae have clamp connections. The spores are roughly elliptical, yellowish, and smooth.

Coronicium is a genus of fungi in the Pterulaceae family. The genus has a widespread distribution in north temperate areas, and contains five species: C. alboglaucum, C. gemmiferum, C. molokaiense, C. proximum, C. thymicola.

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Amyloxenasma is a genus of corticioid fungi in the family Amylocorticiaceae. The widely distributed genus contains six species.

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Oxyporus corticola, commonly known as the boring poria, is a species of fungus. It grows on hardwood and conifer logs. It has also been documented infecting humans and dogs. It is inedible.

Inonotus leporinus is a species of fungus belonging to the family Hymenochaetaceae. It is native to Eurasia and Northern America. Synonym: Pelloporus leporinus

Hyphodermella corrugata is a species of crust fungus in the family Phanerochaetaceae, and the type species of genus Hyphodermella.

Hyphodermella is a genus of crust fungi in the family Phanerochaetaceae. It was circumscribed by mycologists John Eriksson and Leif Ryvarden in 1976.

Gloeocorticium is a genus of fungi in the Cyphellaceae family. The genus is monotypic, containing the single species Gloeocorticium cinerascens, found in Argentina.

Ceriporiopsis jelicii is a species of fungus belonging to the family Phanerochaetaceae.

Auriscalpium andinum is a species of fungus in the family Auriscalpiaceae of the Russulales order. Originally described in 1895 as Hydnum andinum by Narcisse Théophile Patouillard, it was transferred to the genus Auriscalpium in 2001 by Leif Ryvarden. It is found in Ecuador.

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Amylosporus is a genus of fungi in the family Bondarzewiaceae. The genus contains five species that are widely distributed in tropical regions.

Tinctoporellus is a genus of fungi in the family Polyporaceae. Species in the genus produce crust-like fruit bodies with pore-containing surfaces. The type species, T. epimiltinus, grows on the wood of angiosperms and is widespread in distribution. Tinctoporellus was circumscribed by Norwegian mycologist Leif Ryvarden in 1979. He suggested that Antrodia was closely related based on morphological similarities. The Brazilian species Tinctoporellus isabellinus was added to the genus in 2003, while T. bubalinus and T. hinnuleus, found in China, were reported as new to science in 2012.