| Perenniporia | |
|---|---|
 | |
| Perenniporia medulla-panis | |
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Polyporales |
| Family: | Polyporaceae |
| Genus: | Perenniporia Murrill (1942) |
| Type species | |
| Perenniporia medulla-panis | |
| Synonyms [1] | |
Perenniporia is a cosmopolitan genus of bracket-forming or crust-like polypores in the family Polyporaceae. They are dimitic or trimitic with smooth, thick-walled basidiospores and cause a white rot in affected wood.
Perenniporia was proposed by American mycologist William Alphonso Murrill in 1943 to contain two species formerly placed in Poria, a genus formerly used to contain all crust-like poroid fungi. His description of the genus was: "Hymenophore become perennial, riding; context white or yellow; tubes pinkish, white or yellow, stratose in older specimens; spores hyaline." [2] Murrill's concept was to move the species with annual fruit bodies (Poria unita and Poria nigriscens) into Perenniporia, retaining Poria for those that produced perennial fruit bodies. [3] The genus name combines the Latin word perennis ("perennial") with the genus name Poria Edalat. [4]
Murrill's designated type species, P. unita, had a broad and poorly defined species concept that included other species, including Perenniporia medulla-panis. Additionally, P. unita was discovered to be a nomen dubium , which also threatened the validity of the genus Perenniporia. To remedy this nomenclatural instability, Cony Decock and Joost Stalpers proposed to conserve Perenniporiella with P. medulla-panis as the type. [3]
Although Truncospora has traditionally been considered a synonym of Perenniporia, molecular phylogenetic analysis shows that it is genetically unique and worthy of recognition as a distinct genus. [5] Genera that have been segregated from Perenniporia include Perenniporiopsis [6] and Perenniporiella . [7]
The following species are accepted in the genus Perenniporia: [9]
