Herbaria are standard reference centres for identification and verification of new plant material and provide basis for taxonomic studies which include identification, nomenclature, classification, distribution, etc. Taxonomic research relies upon the collection of preserved plants built over a long period of time in the Herbarium. During drying, the specimen is pressed tightly between the absorbents, either newspaper or blotting sheets with the help of a plant press. Poisoning is generally done by dipping the whole plant in a saturated solution of mercuric chloride in ethyl alcohol. The type of paper used for mounting and the methods used to attach the specimens on the paper are governed by cost effectiveness and personal understanding. Herbarium label is attached on each herbarium sheet at the lower right side. The long-term preservation of dry plant specimens in the herbarium is dependent on protection from insect attack. The properly mounted and well labelled herbarium specimens are stored in various herbaria following a systematic arrangement protocol.