Lophodermium pinastri is a fungus in the genus "Lophodermium". Like most species in the genus, it is an endophyte and saprophyte of pine ("Pinus" spp.) needles.
Ecology.
"Lophodermium pinastri" has been reported on numerous species of "Pinus" and can act as an endophyte, a saprophyte, or in rare instances, as a pathogen. It is frequently confused with "Lophodermium seditiosum" - a more serious and damaging pathogen than "L. pinastri".