Hydnomerulius

Hydnomerulius
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Boletales
Family:	Paxillaceae
Genus:	Hydnomerulius; Jarosch & Besl (2001)
Type species
	Hydnomerulius pinastri; (Fr.) Jarosch & Besl (2001)
Synonyms
	Hydnum pinastri Fr. (1814); Sistotrema pinastri (Fr.) Pers. (1825); Acia pinastri (Fr.) P.Karst. (1979); Odontia pinastri (Fr.) Quél. (1880); Merulius pinastri (Fr.) Burt (1917); Gyrophana pinastri (Fr.) Bourdot & Galzin (1923); Serpula pinastri (Fr.) W.B.Cooke (1957); Leucogyrophana pinastri (Fr.) Ginns & Weresub (1976)

Hydnomerulius pinastri is a fungal species of the monotypic genus Hydnomerulius within the Paxillaceae family. H. pinastri is a saprophyte whose nutritional mode creates a brown rot through H₂O₂ decay of cellulose and hemi-cellulose. This species has not been thoroughly studied outside of taxonomic attempts to place it within the fungal tree. As such, its ecological role beyond as a wood decaying agent is unclear at this time. H. pinastri may be referred to colloquially as "spiny dry rot" or "spiny dry rot fungus".