
Ddiaphanous bladder fern, Cystopteris diaphana, growing on a river bank in Cornwall © The Trustees of the Natural History Museum, London
The Museum houses one of the most important collection of ferns and other seed-free vascular plants in the world, with around 280,000 specimens.
Specimens
- 80,000
Type specimens
- 7,000
Strengths
The collections cover global fern diversity and have particular geographical strengths in:
- Europe and the British Isles
- Malesia
- South Asia
- Tropical America
- Macronesia
The collections span the seventeenth century to the present day. They are especially valuable due to their richness in types, historical collections and cytological vouchers.
Our fern type specimens are estimated to exceed 7,000, representing around 20 per cent of published fern names.
Specimens
- Extant ferns 255,000
- Lycophytes 25,000
Type specimens
- Extant ferns 6,600
- Lycophytes 400
Material type
- Herbarium sheets 275,000
- Spirit collection 1,000
- Microscope preparations 400
- Unicorporated collections 60,000
Important collections
- Carl Christensen's Herbarium
- John Smith's Herbarium
- A.H.G. Alston
- Clive Jermy
- Trevor Walker
- Christopher Fraser-Jenkins
- Irene Manton
- Irene Manton's research students, including Anne Sleep and Mary Gibby
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John Smith herbarium specimen of Gleichenia dicarpa
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Carl Christensen herbarium specimen of Blotiella glabra from Africa
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Close-up of a Dryopteris dilatata herbarium specimen
Looking for a specimen?
The fern collection is being digitised
Senior curator
Any questions?
If you would like to use any specimens for research, please get in touch

Collections on the move
We have set out on an ambitious programme to develop a new science and digitisation centre. As we prepare for the move, access to some collections will be affected.
Find out more and sign up to our newsletter to receive updates on changes to collections access, relevant news and opportunities to get involved.

Accessing the collections
Scientists and collections management specialists can visit the collections and borrow specimens for research.
Collections management
Our duty is to provide a safe and secure environment for all of our collections.
- Fern collections
- Historical collections
- Lichen collections
- General Herbarium