Taxonomic studies of various species of plants, animals and other organisms are useful in agriculture, forestry, industry and in general in knowing our bio-resources and their diversity. ,
• Herbarium is a store house of collected plant specimens that are dried, pressed and preserved on sheets. Further, these sheets are arranged according to a universally accepted system of classification.
• The herbarium sheets carry a label providing information about date and place of collection, English, local and botanical names, family, collector’s name, etc.
Also the main reason is Herbarium is a repository or store house for future use. Every institute teaching botany, school college or university, has a small or large herbarium. Very large herbaria are maintained by botanical gardens and institutes connected with plant systematic.
So the students and researchers can easily get information because they are easily available.
Whereas Monographs and Manuels are not sometimes found in our universities or schools.