rare and endangered species. . It offers annual list of available species and a free exchange of seeds. .
Botanical garden gives information about method of propagation, sale of plant material to the general public. Royal Botanic garden, Kew- England Figure . : Royal Botanic garden, Kew - England Royal Botanic garden Kew- England is a non- departmental public body in the United Kingdom. It is the largest botanical garden in the world, established in , but officially opened in the year .
Plant collections include Aquatic garden, Arboretum with , trees, Bonsai collection, Cacti collection and Carnivorous plant collection. . Herbarium – Preparation and uses Herbaria are store houses of preserved plant collections. Plants are preserved in the form of pressed and dried specimens mounted on a sheet of paper.
Herbaria act as a centre for research and function as sources of material for systematic work. Plant Collection Plant specimen with flower or fruit is collected Documentation of field site data Certain data are to be recorded at the time of plant collection. It includes date, time, country, state, city, specific locality information, latitude, longitude, elevation and land mark information. These data will be typed onto a herbarium label.
Preparation of plant specimen Plant specimen collected from the field is pressed immediately with the help of portable field plant press. plant specimen is transferred to a standard plant press ( ” x ”) which between two outer ” x ” frames and secured by two straps. Mounting herbarium specimen The standard size of herbarium sheet is used for mounting the specimen (29cm x 41cm). specimens are affixed to herbarium sheet with standard white glue or solution of Methyl cellulose.
Herbarium label Herbarium label size is generally - ’’ wide and - ’’ tall. A typical label contains all in- formation like habit, habitat, vegetation type, land mark information, latitude, longitude, image document, collection number, date of collection and name of the collector. Protection of herbarium sheets against mold and insects Apply cation of % Mercuric chloride, Naphthalene, DDT, carbon disulphide. Fu- migation using formaldehyde.
Presently deep freezing(