Definition: Lithophysal refers to a type of organism that is characterized by its ability to form and maintain a distinct, well-defined structure known as a lithophyte. Lithophytes are an order of plants that belong to the class Plagiolariaceae and are found in various environments such as forest floors, wetlands, and coastal areas. They have evolved specialized structures for their unique needs, including leaf-like projections or spines on the leaves, which help them maintain a protective barrier