Genus Epiphyllum is a member of the cactus family and is popularly known as the orchid cactus. This genus is native to the tropical regions of America and has beautiful, showy flowers that bloom at night. It has several synonyms, including Disocactus, Phyllocactus, Zygocactus, and Schlumbergera. These names were given by botanists who reclassified the plants under different genera based on their morphological characteristics. However, most of these synonyms are still in use and are commonly referred to by plant enthusiasts. Regardless of the name, Genus Epiphyllum is an amazing plant that can add beauty to any garden.