A herbarium is a collection of preserved plant specimens that are used for scientific study and reference. These specimens are typically dried, pressed, and mounted on sheets of paper, along with labels that provide information about the plant's name, location, and date of collection. Herbariums serve as important resources for botanists and researchers, helping them identify and classify plants. Herbariums can be found in universities, research institutions, and museums around the world. They play a crucial role in fields such as taxonomy, ecology, and conservation, as they provide valuable data on plant diversity and distribution. Additionally, herbariums can help track changes in plant populations over time, contributing to our understanding of environmental changes.