A herbarium is a collection of dried and mounted plant specimens. Whole plants collected from the field are spread flat and dried, usually between absorbent sheets in a plant press. They are then mounted on stiff white paper and carefully labeled. Specimens are often poisoned as a precaution against insect attacks. Herbaria are said to be the “dictionaries” of the plant kingdom, containing the reference specimens essential to the proper naming of unknown plants. How are specimens organized? Discuss