A small but historically significant herbarium of plants, algae and fungi dating back to the late eighteenth century is mostly from the British Isles and is maintained separately within the University Herbarium (UC), University of California, Berkeley.
Formerly the International Mycological Institute (IMI), CABI BIOSCIENCE UK is part of an intergovernmental organisation established by treaty dedicated to improving human welfare through the application of scientific knowledge in support of sustainable development world-wide, with emphasis on agriculture, forestry, human health and conservation of natural resources, and with particular attention to the needs of developing countries. The CABI Genetic Resources Collection (GRC) is tasked with the collection of organisms to provide a resource for the scientific programmes of CABI. The GRC accesses filamentous fungi and yeasts, plant pathogenic bacteria, nematodes and biocontrol agents belonging to these groups. As well as live material the GRC is backed by over 370 000 dried specimens, including the National Collection of Wood Rotting Fungi.
The Shrewsbury School herbarium consists of a large cabinet with two columns of drawers – about 50 in all. Each drawer contains a few folders of plants, arranged by family, according to the London Catalogue. Most of the collection was compiled by Richard de Gylpyn Benson between 1891 and 1905, mostly of specimens collected by him and members of his family in the Pulverbatch area, but with some Botanical Exchange Club material from around the country.
There are about 2,500 sheets in total, with a catalogue compiled by Benson.
The collection was photographed in February 2007.