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The process of pinning insect specimens is a dry method to preserve and display collections and requires special entomological equipment to accomplish effectively. [1] It is used primarily for hard-bodied, medium to large specimens and is beneficial for easier study and color preservation.
It is not exactly known how long dry plant specimens last in storage, but with proper conservation, they have been able to last many centuries. Specimens collected by Linnaeus in the eighteenth century and by Banks and Solander on the Endeavour voyage in 1788 are still excellently preserved. [4] The specimens may be whole plants or plant parts.
Large seeds or fruits may be stored in boxes without compression. [3] Aquatic plants and delicate plants may be stored in a liquid preservative. Cacti may be stored in ethanol. In cases where drying or pressing a plant may destroy or alter a plant feature being studied, 50-75% ethanol can be used to preserve the specimen for up to 4 weeks.
Drying herbs is a great way to preserve that garden-fresh summer flavor throughout the year. It requires minimal effort and it's so much more affordable than buying dried herbs from the store.
The seeds are rarely eaten fresh by Somali children, more often they are first dried in the shade during 7–10 days and then the hard seed coat is removed. For storage, the seeds have to be roasted or boiled to prevent fungal attack, to kill insects eggs and larvae inside the seeds and to harden the seed coat. [5]
To start a chaste tree from seed, collect and extract the seed from mature fruit in the fall. Plant it in a container filled with well-draining soil, water it, and leave it outdoors over the winter.
The specimens, which are then mounted on sheets of stiff white paper, are labelled with all essential data, such as date and place found, description of the plant, altitude, and special habitat conditions. The sheet is then placed in a protective case. As a precaution against insect attack, the pressed plant is frozen or poisoned, and the case ...
Using a plant press on a collecting trip Specimens prepared in a plant press are later glued to card stock with their labels, and are filed in a herbarium.. A plant press is a set of equipment used by botanists to flatten and dry field samples so that they can be easily stored.