I have to do I have to do my activity to make herbarium album
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Herbarium is a store house of collected plant specimens that are dried, pressed and preserved on sheets.
Steps to be followed during the preparation of Herbarium file-
1) Collection-
Those specimens which are complete in all aspects should be collected like - if herbs or small shrubs are collected, they should be in flowering condition, along with leaves and roots.
for trees, you can collect their flowering stem with leaves, flowers and smaller branches.
All information regarding the specimen should be noted down in the field notebook and a tag from the sheet should be attached to the specimen.
Always try to have extra specimen reserved so that if one get destroyed, you should use the other one.
2) Pressing-
The collected specimen should be placed in the field press at the first opportunity.
If specimen is less than 15 inches, it should be kept directly by folding in the newspaper but if it is more than 15 inches, it should be folded in form of a 'V','N' R 'W'.
Ensure that specimen should not be damaged.
3) Drying)
It is a slow process as it does not involve any artificial heat.
It can be done naturally and artificially by using solar powered drier.
Natural drying can take upto two months during which plant can loose some moisture whereas artificial drying can be completed in 1-2 days. which induces some colour change in leaves, loss of bloom etc.
4) Mounting of specimens-
Finally, pressed and dried specimens are mounted on herbarium sheets.
A standard herbarium sheet is 29 X 41 cm.
Adhesive linen, paper of cellophane strips should be used for fixing specimens.
5) Labelling-
The information includes- Scientific name of the plant, common name, locality from where it is collected, date of collection, name of the collector, habit and habitat of the plant.
Some of the examples of plants in various categories are
Herbs- Maize, wheat, rice etc.
Shrubs- Lemon, Rose
Tree- Neem, Ashoka, Mango, Peepal
Monocots- orchids, rice, wheat, maize, sugar cane, bamboos etc.
Pteridophytes- ferns, mosses
Steps to be followed during the preparation of Herbarium file-
1) Collection-
Those specimens which are complete in all aspects should be collected like - if herbs or small shrubs are collected, they should be in flowering condition, along with leaves and roots.
for trees, you can collect their flowering stem with leaves, flowers and smaller branches.
All information regarding the specimen should be noted down in the field notebook and a tag from the sheet should be attached to the specimen.
Always try to have extra specimen reserved so that if one get destroyed, you should use the other one.
2) Pressing-
The collected specimen should be placed in the field press at the first opportunity.
If specimen is less than 15 inches, it should be kept directly by folding in the newspaper but if it is more than 15 inches, it should be folded in form of a 'V','N' R 'W'.
Ensure that specimen should not be damaged.
3) Drying)
It is a slow process as it does not involve any artificial heat.
It can be done naturally and artificially by using solar powered drier.
Natural drying can take upto two months during which plant can loose some moisture whereas artificial drying can be completed in 1-2 days. which induces some colour change in leaves, loss of bloom etc.
4) Mounting of specimens-
Finally, pressed and dried specimens are mounted on herbarium sheets.
A standard herbarium sheet is 29 X 41 cm.
Adhesive linen, paper of cellophane strips should be used for fixing specimens.
5) Labelling-
The information includes- Scientific name of the plant, common name, locality from where it is collected, date of collection, name of the collector, habit and habitat of the plant.
Some of the examples of plants in various categories are
Herbs- Maize, wheat, rice etc.
Shrubs- Lemon, Rose
Tree- Neem, Ashoka, Mango, Peepal
Monocots- orchids, rice, wheat, maize, sugar cane, bamboos etc.
Pteridophytes- ferns, mosses
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