Melampsora lini is a fungus that infects flax plants and is commonly known as flax rust. Synonyms for this term include Melampsora flaxiae-trisectae, Melampsora liniperda, and Melampsora lini-trifida. This fungal infection can cause significant damage to crops, leading to reduced yields and economic losses for farmers. To prevent the spread of flax rust, it is important to practice good agricultural practices, including crop rotation and timely removal of infected plant material. Early detection and treatment with fungicides can also help to minimize the impact of Melampsora lini on agricultural production.