Question

Describe briefly the rule of harbarium sheet in taxonomic studies​

Answer 1

Answer:

A herbarium (plural: herbaria) is a collection of preserved plant specimens and associated data used for scientific study.[1]

The specimens may be whole plants or plant parts; these will usually be in dried form mounted on a sheet of paper (called "exsiccatae") but, depending upon the material, may also be stored in boxes or kept in alcohol or other preservative.[2] The specimens in a herbarium are often used as reference material in describing plant taxa; some specimens may be types.

The same term is often used in mycology to describe an equivalent collection of preserved fungi, otherwise known as a fungarium.[3] A xylarium is a herbarium specialising in specimens of wood.[4] The term hortorium (as in the Liberty Hyde Bailey Hortorium) has occasionally been applied to a herbarium specialising in preserving material of horticultural origin.[5]

Answer 2

Heyyy...hope it helps you....

Answer:

Meaning of herbarium:

A herbarium is a store house of plant specimens. In it dried, pressed, preserved and mounted plant specimens are arranged in a sequence of an accepted system of classification for future reference and study. The collected plant specimens from far and wide, mounted on appropriate sheets and kept in pigeon holes of steel or wooden cupboards for study at the same place and time.

Explanation:

Rule of harbarium sheet:

• Specimens may be dissected for study only when the structures to be detached are sufficiently present to do so without harming the future use of the specimen. Use no more material than is strictly necessary. Dissected portions should be dried, put in a paper capsule and glued to the sheet (vascular plants).

• For the vascular plants Herbarium: detach and use material for specialized study (scanning microscopy, flowers for pollen morphology, leaves for DNA extraction) only when the structures needed are sufficiently present. Use no more material than strictly necessary; do not use type specimens. Attach an appropriate label indicating your study and its publication. In case of anatomical, one slide of each made must be submitted to the BR collection.

• Barcode labels may be attached to the specimens. They bear a unique permanent number that may be used as a reference for otherwise unnumbered collections in any publication.

• For the non-vascular cryptogam herbarium: labels should be either placed within the appropriate packet or attached to the outside with a paper clip. Do not glue them in place! For the vascular plants herbarium: follow standard herbarium practice as regards labelling. Attach determinations or confirmations to every specimen as appropriate, i.e. without obscuring existing labels or writing on these. Attach type labels with precise information, especially when a nomenclatural type is not yet marked as such (e.g. "holo/iso/syntype of..."; "neo/lectotype of ...", "selected by.."

• Use of the herbarium material in your resulting publications and send a reprint.

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