TODAY'S HOURS: 8 AM – 3 PM

*Last entry is an hour before closing

TODAY'S HOURS: 8 AM – 3 PM

*Last entry is an hour before closing

Preservation and Storage

Herbarium specimens will last for hundreds of years if properly cared for. The best conditions for storage include low temperature (from 50–65ºF), low humidity, low light, and infrequent handling. Roaches and certain beetles will destroy plant specimens. You can kill insects in dried plant specimens by freezing them for three or four days, and keep them pest-free in a tightly-sealed plastic bag. There are various ways to achieve these conditions. In a herbarium, plants are stored in folders within airtight cabinets. Any dried plant material is frozen before entering the herbarium, and the space is periodically treated with a pyrethrin spray (an organic insecticide made from chrysanthemums). In the BRIT herbarium, plants are organized alphabetically by the plant family to which they belong, then by the genus, then by geographic area and the species to which they belong. This organization facilitates the use of the herbarium by researchers and the public. You may view an excerpt about how we file specimens in the BRIT herbarium in the appendix.

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Plant Collecting: How-To

Mounting

There is an art to the mounting of plant specimens to their archival quality cardstock backing. BRIT’s volunteers and staff participate in this activity daily.

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Identification

Plant identification requires you have as much of the plant as possible, and in some occassions this cannot be accomplished if you are dealing with a sterile specimen.

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Pressing and Drying

To facilitate specimen storage and use, collected plants must be pressed to a 2-dimensional status and dried to remove any moisture that would encourage fungal growth.

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Data Record and Photography

A specimen is scientifically useful if it is accompanied by collection notes regarding where, when and under what ciscumstances a plant was collected.

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Plant Collection

Plant collections ought to be made in such a manner as to increase their longevity as preserved herbarium specimens, as well as optimize their usefulness for future research.Plant collections ought to be made in such a manner as to increase their longevity as preserved herbarium specimens, as well as optimize their usefulness for future research.

Read More »