Mistletoe (Viscum album) is an evergreen woody plant characterized by a hemiparasitic lifestyle, growing on the branches of trees and shrubs. It obtains water and mineral nutrients from its host plant while retaining the ability to perform photosynthesis because it possesses green leaves and stems. It belongs to the family Santalaceae and is characterized by forming a rounded, bush-like mass on the branches of host plants. Its leaves are yellowish-green, opposite, and relatively thick, with clearly visible parallel veins. The plant develops a specialized structure called a haustorium, which penetrates the tissues of the host plant and connects with its vascular system, allowing mistletoe to obtain water and nutrients. Mistletoe produces small, inconspicuous flowers, and male and female plants are separate in some species. Female plants produce white or translucent fruits containing seeds surrounded by a sticky substance. Birds play an important role in dispersing the seeds from one tree to another. This mode of dispersal is well suited to the plant’s lifestyle because the seed must reach a suitable branch before its life cycle can begin. A large number of mistletoe plants on a single tree may increase stress on the host as a result of the consumption of water and nutrients. At the same time, mistletoe forms an important part of the ecosystem and provides food and shelter for some organisms. Therefore, it is considered one of the important examples of hemiparasitism and specialized plant adaptations.