indicates that it is a cultivated or collected variation of Philodendron pastazanum but may not precisely match the typical characteristics of the species. The "aff" stands for "affinis," a Latin term meaning "related to." It is often used in botanical nomenclature to denote that the plant shares similarities with the named species but may have slight differences. These differences could be due to variations in growing conditions, geographic location, or specific traits that set it apart from the standard form of Philodendron pastazanum. In such cases, the plant is often of interest to collectors and enthusiasts for its uniqueness.