Biscogniauxia nummularia decline of European beech ("Fagus sylvatica") in Sicily and Calabria (Italy) has been linked to "B. nummularia" and experiments have suggested that this ascomycete plays a primary pathogenic role under certain environmental conditions. It typically causes strip‐cankering and general wood decay. Biscogniauxia nummularia Biscogniauxia nummularia is a plant pathogen in the family Xylariaceae, 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. The fruit body forms a thick and shiny black crust, on beech ("Fagus") bark and is found at all times of the
Stillingia sylvatica fruiting from April to September. Stillingia sylvatica Stillingia sylvatica, known as queen's-delight or queen's delight, is a species of flowering plant in the family Euphorbiaceae. It was described in 1767. It is endemic to the south-central and southeastern United States, growing in sandy areas such as sandhills and pine flatwoods. It is an herb or subshrub averaging in height. It has alternate, ovate leaves with short petioles, reaching in length and in width. The leaf margins are serrulate to crenulate with incurved teeth. Each crowded inflorescence has four to seven staminate flowers and three to four pistillate flowers. Queen's delight