Phoma alienaSphaeria aliena Didymella aliena is a species of fungus belonging to the family Didymellaceae, that lives as an opportunistic pathogen on several species of plants worldwide.

First described in 1823 by Swedish mycologist and botanist, Elias Magnus Fries, the species has undergone several name changes and been found worldwide.

[1] The species was first described as Sphaeria aliena in 1823 by Elias Fries in the Systema mycologicum.

[2] Then one of the same authors published another paper in 2009 called Molecular phylogeny of Phoma and allied anamorph genera where Didymellaceae was divided into three main genera: Phoma, Didymella, and Ascoschyta.

[5] In a recently published survey of D. aliena, was when it was found in northern Greece 2024 on rotting pomegranates for the first time.