Biscogniauxia nummularia

Biscogniauxia nummularia
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Ascomycota
Class:	Sordariomycetes
Order:	Xylariales
Family:	Graphostromataceae
Genus:	Biscogniauxia
Species:	B. nummularia
Binomial name
	Biscogniauxia nummularia; (Bull.) Kuntze (1891)
Synonyms
	Biscogniauxia bulliardii (Tul. & C.Tul.) Kuntze; Hypoxylon nummularium Bull. (1790); Hypoxylon nummularium var. nummularium Bull.; Kommamyce bulliardii (Tul. & C.Tul.) Nieuwl.; Nummularia anthracina (J.C.Schmidt) Traverso; Nummularia bulliardii Tul. & C.Tul.; Nummularia nummularia (Bull.) J.Schröt.; Numulariola nummularia (Bull.) House; Sphaeria anthracina J.C.Schmidt; Sphaeria nummularia DC.;

Biscogniauxia nummularia is a plant pathogen in the family Graphostromataceae, known as the beech tarcrust. The specific epithet is derived from the Latin "nummus" meaning a coin, referring to the often rounded and coin-like encrustations.