Scleroderris
Scleroderris is a genus of fungi that includes several significant plant pathogens. The most well-known species is Gremmeniella abietina, formerly known as Scleroderris lagerbergii. This fungus primarily affects coniferous trees, particularly pines, spruces, and firs. It causes a disease known as Scleroderris canker, or brown spot needle blight.
The fungus typically infects young trees or the lower branches of older trees that are shaded and
Scleroderris thrives in cool, moist conditions and is often associated with dense stands of young conifers.