Preserving plant specimens involves pressing and drying them to create long-lasting, flat samples. This process, commonly used in botany and herbaria, allows for the study and archival of plant life.
Methods for Preserving Plant Specimens
The American Museum of Natural History provides a detailed guide outlining the process:
1. Preparation and Collection
- Acquire a plant press: You can either purchase a pre-made press or construct one yourself. This press will apply even pressure to flatten the plant.
- Specimen Selection: Carefully choose your plant specimen, ensuring it is representative of the species and in good condition.
- Transportation: Transport the specimen in a rigid container (to prevent crushing) or a plastic bag to protect it until pressing.
2. Pressing and Drying
- Cleaning: Gently clean the plant to remove excess dirt and debris before pressing.
- Arrangement: Arrange the plant specimen on a sheet of newspaper, ensuring that all key features (leaves, flowers, stems) are visible and flattened.
- Layering: Create layers of newspaper and specimens, interleaving them within your plant press to ensure even pressure and drying. This process helps the plant to retain its shape while drying.
3. Drying and Storage
- Drying: Allow the specimen to dry completely within the press, which may take several days to several weeks depending on the plant's moisture content and environmental conditions. Regularly check and change the newspaper sheets as needed to absorb excess moisture.
- Storage: Once completely dry, carefully mount your pressed specimen on archival-quality paper, using acid-free glue or tape. Label the specimen clearly with information like the species name, location, and date of collection. Store the mounted specimen in a cool, dry, dark place to prevent deterioration.
Tips for Success
- Use absorbent paper like newspaper or blotter paper for optimal drying.
- Change the newspaper layers frequently, especially in humid conditions.
- Avoid overcrowding the press to allow for even air circulation.
- Proper labeling is crucial for future identification and research.
