Neocamarosporium betae

Neocamarosporium betae is a plant pathogen infecting Beta vulgaris and causes Phoma leaf spot.
It was originally published and described in 1877 as Pleospora betae before being resolved as Neocamarosporium betae in 2015.
It also causes leaf spot on Spinach plants.
It contains the chemical substances betaenone A, B and C. Pleospora betae develops on dead beet residues and is a marsupial stage of the Phoma betae anamorph, parasitizing on beets and causing a number of harmful diseases.