Genus Haldea is a group of fungal species that belong to the Mycosphaerellaceae family. This genus has some synonyms, including Passalora, Pseudocercospora, and Ramularia. These synonyms were assigned based on morphological characteristics and genetic analysis. The Passalora genus is characterized by the formation of septate conidia, while Pseudocercospora has smooth conidia. Ramularia, on the other hand, has dark, cylindrical conidia. The distinction between these genera is very important in disease diagnosis and management. Synonyms for Genus Haldea have contributed to the advancement of the field of fungal taxonomy and provided valuable insights into the nature of these fungal species.