Gnomonia is a genus of fungi in the family Gnomoniaceae.

The genus contains as estimated 60 species including: Gnomonia alnea Gnomonia borealis Gnomonia caryae Gnomonia comari Gnomonia dispora Gnomonia fructicola Gnomonia iliau Gnomonia leptostyla Gnomonia nerviseda Gnomonia rubi Gnomonia tithymalina Gnomonia vulgaris

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